Ruby 3 Windows 10 Gem load Error

[Karoid]

When I run 'rails s', I receive the following error:
D:/RubyInstaller/Ruby3.0.0/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/dll_directory.rb:83:in `add_dll_directory_winapi': AddDllDirectory failed for D:/RubyInstaller/Ruby3.0.0/lib/ruby/gems/3.0.0
/gems/pg-1.2.3/lib/x64-mingw32 (RubyInstaller::Runtime::DllDirectory::WinApiError)

It seems like there is some problem with gem installation process.

directory structure of pg gem installed in ruby 2.7:

directory structure of pg gem installed in ruby 3.0:

[Environment Details]
Ruby 3.0.0
Rails 6.1.0
Pg 1.2.3
PostgreSQL version: 10
OS: Windows10 (not WOL)

[charlie-prezzano]

I am running into the same issue.

I have installed Ruby-3.0.0 with RubyInstaller DevKit (Windows 10). The pg gem (v1.2.3) installs successfully, but when I start my local Rails App (in RubyMine, v 2020.3.1) I receive this error:
C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:69:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'pg'. (Bundler::GemRequireError)
Gem Load Error is: AddDllDirectory failed for C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/x64-mingw32

I did notice that pg gem (https://rubygems.org/gems/pg/versions/1.2.3-x64-mingw32) required ruby versions is listed as: >= 2.2, < 2.8.dev.

[Environment Details]
Ruby 3.0.0
Rails 5.2.4.4
Pg 1.2.3
PostgreSQL version: 12.5
OS: Windows10

[PsychoPhobic]

Hi, same issue here

Ruby 3.0.0
Rails 6.1.1
pg 1.2.3
windows 10

**this happens on rake db:create**

PS C:\Rails Projekte\ab 2020\pmaster> rake db:create
C:/Ruby30-x64/lib/ruby/3.0.0/ostruct.rb:110: warning: already initialized constant OpenStruct::VERSION
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ostruct-0.3.2/lib/ostruct.rb:110: warning: previous definition of VERSION was here
C:/Ruby30-x64/lib/ruby/3.0.0/ostruct.rb:336: warning: already initialized constant OpenStruct::InspectKey
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ostruct-0.3.2/lib/ostruct.rb:347: warning: previous definition of InspectKey was here
rake aborted!
Bundler::GemRequireError: There was an error while trying to load the gem 'pg'.
Gem Load Error is: AddDllDirectory failed for C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/x64-mingw32
Backtrace for gem load error is:
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/dll_directory.rb:83:in `add_dll_directory_winapi'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/dll_directory.rb:50:in `initialize'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/singleton.rb:12:in `new'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/singleton.rb:12:in `add_dll_directory'

C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:15:in `block in <main>'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:26:in `rescue in <main>'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:4:in `<main>'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'

Caused by:
RubyInstaller::Runtime::DllDirectory::WinApiError: AddDllDirectory failed for C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/x64-mingw32
C:/Rails Projekte/ab 2020/pmaster/config/application.rb:7:in `<top (required)>'
C:/Rails Projekte/ab 2020/pmaster/Rakefile:4:in `require_relative'
C:/Rails Projekte/ab 2020/pmaster/Rakefile:4:in `<top (required)>'

Caused by:
LoadError: 126: Das angegebene Modul wurde nicht gefunden.   - C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg_ext.so
C:/Rails Projekte/ab 2020/pmaster/config/application.rb:7:in `<top (required)>'
C:/Rails Projekte/ab 2020/pmaster/Rakefile:4:in `require_relative'
C:/Rails Projekte/ab 2020/pmaster/Rakefile:4:in `<top (required)>'
(See full trace by running task with --trace)
PS C:\Rails Projekte\ab 2020\pmaster>

**this happens on rails s**

C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:69:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'pg'. (Bundler::GemRequireError)
Gem Load Error is: AddDllDirectory failed for C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/x64-mingw32
Backtrace for gem load error is:
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/dll_directory.rb:83:in `add_dll_directory_winapi'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/dll_directory.rb:50:in `initialize'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/singleton.rb:12:in `new'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/singleton.rb:12:in `add_dll_directory'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:15:in `block in <main>'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:26:in `rescue in <main>'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:4:in `<main>'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:66:in `block (2 levels) in require'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:61:in `each'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:61:in `block in require'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:50:in `each'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:50:in `require'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler.rb:173:in `require'
C:/Rails Projekte/ab 2020/pmaster/config/application.rb:7:in `<main>'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands/server/server_command.rb:138:in `block in perform'
<internal:kernel>:90:in `tap'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands/server/server_command.rb:135:in `perform'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor/command.rb:27:in `run'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor/invocation.rb:127:in `invoke_command'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor.rb:392:in `dispatch'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/command/base.rb:69:in `perform'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/command.rb:50:in `invoke'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands.rb:18:in `<main>'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
bin/rails:4:in `<main>'
Bundler Error Backtrace:
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:65:in `block (2 levels) in require'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:61:in `each'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:61:in `block in require'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:50:in `each'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:50:in `require'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler.rb:173:in `require'
        from C:/Rails Projekte/ab 2020/pmaster/config/application.rb:7:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands/server/server_command.rb:138:in `block in perform'
        from <internal:kernel>:90:in `tap'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands/server/server_command.rb:135:in `perform'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor/command.rb:27:in `run'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor/invocation.rb:127:in `invoke_command'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor.rb:392:in `dispatch'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/command/base.rb:69:in `perform'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/command.rb:50:in `invoke'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands.rb:18:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
        from bin/rails:4:in `<main>'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/dll_directory.rb:83:in `add_dll_directory_winapi': AddDllDirectory failed for C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/x64-mingw32 (RubyInstaller::Runtime::DllDirectory::WinApiError)
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/dll_directory.rb:50:in `initialize'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/singleton.rb:12:in `new'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/singleton.rb:12:in `add_dll_directory'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:15:in `block in <main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:26:in `rescue in <main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:4:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:66:in `block (2 levels) in require'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:61:in `each'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:61:in `block in require'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:50:in `each'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:50:in `require'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler.rb:173:in `require'
        from C:/Rails Projekte/ab 2020/pmaster/config/application.rb:7:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands/server/server_command.rb:138:in `block in perform'
        from <internal:kernel>:90:in `tap'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands/server/server_command.rb:135:in `perform'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor/command.rb:27:in `run'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor/invocation.rb:127:in `invoke_command'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor.rb:392:in `dispatch'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/command/base.rb:69:in `perform'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/command.rb:50:in `invoke'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands.rb:18:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
        from bin/rails:4:in `<main>'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require': 126: Das angegebene Modul wurde nicht gefunden.   - C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg_ext.so (LoadError)
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:5:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:66:in `block (2 levels) in require'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:61:in `each'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:61:in `block in require'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:50:in `each'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler/runtime.rb:50:in `require'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/bundler.rb:173:in `require'
        from C:/Rails Projekte/ab 2020/pmaster/config/application.rb:7:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands/server/server_command.rb:138:in `block in perform'
        from <internal:kernel>:90:in `tap'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands/server/server_command.rb:135:in `perform'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor/command.rb:27:in `run'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor/invocation.rb:127:in `invoke_command'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.0.1/lib/thor.rb:392:in `dispatch'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/command/base.rb:69:in `perform'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/command.rb:50:in `invoke'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.1/lib/rails/commands.rb:18:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
        from bin/rails:4:in `<main>'

C:\Rails Projekte\ab 2020\pmaster>

[larskanis]

This happens, if pg gem is installed with a dedicated PostgreSQL installation. I'll update the pg gem soon to fix this and to distribute ruby-3.0 compatible binary gems, but until then there are 3 workarounds:

1. install postgresql per pacman: ridk exec pacman -S mingw-w64-x86_64-postgresql and reinstall pg gem
2. set RUBY_DLL_PATH=<your-path-to-postgresql>/bin as in our CI before running the ruby app.
3. Downgrade to ruby < 3.0, since that installs the binary windows gems instead.

[francesco-loreti]

1. install postgresql per pacman: `ridk exec pacman -S mingw-w64-x86_64-postgresql` and reinstall pg gem
2. `set RUBY_DLL_PATH=<your-path-to-postgresql>/bin` as [in our CI](https://github.com/ged/ruby-pg/blob/4de2c7df34b23a23841b114ae6606161be44d269/appveyor.yml#L22) before running the ruby app.

Neither solution works for me.
pg-1.2.3-x64-mingw32 requires ruby version < 2.8.dev, >= 2.2, which is incompatible with the current version, ruby 3.0.0p0

[ryarturogi]

This happens, if pg gem is installed with a dedicated PostgreSQL installation. I'll update the pg gem soon to fix this and to distribute ruby-3.0 compatible binary gems, but until then there are 3 workarounds:

1. install postgresql per pacman: ridk exec pacman -S mingw-w64-x86_64-postgresql and reinstall pg gem
2. set RUBY_DLL_PATH=<your-path-to-postgresql>/bin as in our CI before running the ruby app.
3. Downgrade to ruby < 3.0, since that installs the binary windows gems instead.

this worked but idk why looking for answers :/

[kalmenius]

@larskanis Any update on the Ruby 3.0 compatible gem updates? I'm in the same boat -- only downgrading Ruby seems to fix this on my Windows machine.

[francesco-loreti]

any news?

[cratag]

I would like to know as soon as the gem is fixed

[PsychoPhobic]

it would be nice if someone could do something about the breaking bug. is it so difficult to build against a new version?
unfortunately i'm a hobby programmer and i can't fix it myself

[ariccio]

Something I'm noticing here is that rg.rb rescues a LoadError but rubyinstaller2 add_dll_directory raises a WinApiError.

Changing the rescue to a WinApiError causes the load to break somewhere entirely different:

C:\Users\Lucius Riccio\Documents\GitHub\COVID-CO2-tracker\COVID_CO2_TRACKER>rails credentials:edit
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require': cannot load such file -- 3.0/pg_ext (LoadError)
Did you mean?  3.0.0/devkit
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:89:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:44:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.2.1/lib/active_support/dependencies.rb:332:in `block in require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.2.1/lib/active_support/dependencies.rb:299:in `load_dependency'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.2.1/lib/active_support/dependencies.rb:332:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:27:in `block in <main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:19:in `rescue in block in <main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:13:in `block in <main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:26:in `rescue in <main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:4:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:66:in `block (2 levels) in require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:61:in `each'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:61:in `block in require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:50:in `each'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:50:in `require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler.rb:174:in `require'
        from C:/Users/Lucius Riccio/Documents/GitHub/COVID-CO2-tracker/COVID_CO2_TRACKER/config/application.rb:22:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/command/actions.rb:22:in `require_application!'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/commands/credentials/credentials_command.rb:29:in `edit'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.1.0/lib/thor/command.rb:27:in `run'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.1.0/lib/thor/invocation.rb:127:in `invoke_command'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.1.0/lib/thor.rb:392:in `dispatch'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/command/base.rb:69:in `perform'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/command.rb:50:in `invoke'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/commands.rb:18:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from bin/rails:4:in `<main>'
C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/dll_directory.rb:83:in `add_dll_directory_winapi': AddDllDirectory failed for C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/x64-mingw32 (LoadError)
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/dll_directory.rb:50:in `initialize'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/singleton.rb:12:in `new'
        from C:/Ruby30-x64/lib/ruby/site_ruby/3.0.0/ruby_installer/runtime/singleton.rb:12:in `add_dll_directory'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:15:in `block in <main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:26:in `rescue in <main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:4:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:66:in `block (2 levels) in require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:61:in `each'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:61:in `block in require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:50:in `each'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:50:in `require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler.rb:174:in `require'
        from C:/Users/Lucius Riccio/Documents/GitHub/COVID-CO2-tracker/COVID_CO2_TRACKER/config/application.rb:22:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/command/actions.rb:22:in `require_application!'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/commands/credentials/credentials_command.rb:29:in `edit'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.1.0/lib/thor/command.rb:27:in `run'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.1.0/lib/thor/invocation.rb:127:in `invoke_command'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.1.0/lib/thor.rb:392:in `dispatch'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/command/base.rb:69:in `perform'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/command.rb:50:in `invoke'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/commands.rb:18:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from bin/rails:4:in `<main>'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require': 126: The specified module could not be found.   - C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg_ext.so (LoadError)
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.2.1/lib/active_support/dependencies.rb:332:in `block in require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.2.1/lib/active_support/dependencies.rb:299:in `load_dependency'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/activesupport-6.1.2.1/lib/active_support/dependencies.rb:332:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/pg-1.2.3/lib/pg.rb:5:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:66:in `block (2 levels) in require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:61:in `each'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:61:in `block in require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:50:in `each'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler/runtime.rb:50:in `require'
        from C:/Ruby30-x64/lib/ruby/3.0.0/bundler.rb:174:in `require'
        from C:/Users/Lucius Riccio/Documents/GitHub/COVID-CO2-tracker/COVID_CO2_TRACKER/config/application.rb:22:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/command/actions.rb:22:in `require_application!'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/commands/credentials/credentials_command.rb:29:in `edit'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.1.0/lib/thor/command.rb:27:in `run'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.1.0/lib/thor/invocation.rb:127:in `invoke_command'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/thor-1.1.0/lib/thor.rb:392:in `dispatch'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/command/base.rb:69:in `perform'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/command.rb:50:in `invoke'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/railties-6.1.2.1/lib/rails/commands.rb:18:in `<main>'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from bin/rails:4:in `<main>'

I suspect this is part of the problem, or at least a latent bug. It doesn't seem like the use of WinApiError is a recent change or anything.

[ariccio]

This happens, if pg gem is installed with a dedicated PostgreSQL installation. I'll update the pg gem soon to fix this and to distribute ruby-3.0 compatible binary gems, but until then there are 3 workarounds:

1. install postgresql per pacman: ridk exec pacman -S mingw-w64-x86_64-postgresql and reinstall pg gem
2. set RUBY_DLL_PATH=<your-path-to-postgresql>/bin as in our CI before running the ruby app.
3. Downgrade to ruby < 3.0, since that installs the binary windows gems instead.

1 worked for me.