plugin "serverless-stack-output" not found

[swedstrom]

Serverless Error ---------------------------------------

Serverless plugin "serverless-stack-output" not found. Make sure it's installed and listed in the "plugins" section of your serverless config file.

output from

sls plugin list
serverless-stack-output - Store output from your AWS CloudFormation Stack in JSON/YAML/TOML files, or to pass it to a JavaScript function for further processing.

config file and output file are exactly as in the ReadMe.md

[anurag-roy]

Use npm install serverless-stack-output