[Bug]: NC 25 Error: Object of class OC\User\User could not be converted to string

[AndyXheli]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• Nextcloud Server is running on 64bit capable CPU, PHP and OS.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

Might be similar to

Below tickers are from NC 13 & NC 16
#13433
#6534

Steps to reproduce

1.N/A

Expected behavior

N/A

Installation method

Community Manual installation with Archive

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.0

Web server

Apache (supported)

Database engine version

MariaDB

Is this bug present after an update or on a fresh install?

Updated to a major version (ex. 22.2.3 to 23.0.1)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

No response

List of activated Apps

NA

Nextcloud Signing status

No response

Nextcloud Logs

{"reqId":"7Wljl0ynW8JKT7DniyNk","level":3,"time":"2022-09-19T14:15:03+00:00","remoteAddr":"","user":"--","app":"core","method":"","url":"--","message":"Error while running background job (class: OCA\\Activity\\BackgroundJob\\EmailNotification, arguments: )","userAgent":"--","version":"25.0.0.11","exception":{"Exception":"Error","Message":"Object of class OC\\User\\User could not be converted to string","Code":0,"Trace":[{"file":"/var/www/nextcloud/lib/private/Log.php","line":405,"function":"strtr"},{"file":"/var/www/nextcloud/lib/private/Log.php","line":326,"function":"interpolateMessage","class":"OC\\Log","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Logger.php","line":125,"function":"logException","class":"OC\\Log","type":"->"},{"file":"/var/www/nextcloud/apps/activity/lib/MailQueueHandler.php","line":420,"function":"logException","class":"OC\\AppFramework\\Logger","type":"->"},{"file":"/var/www/nextcloud/apps/activity/lib/MailQueueHandler.php","line":165,"function":"sendEmailToUser","class":"OCA\\Activity\\MailQueueHandler","type":"->"},{"file":"/var/www/nextcloud/apps/activity/lib/BackgroundJob/EmailNotification.php","line":61,"function":"sendEmails","class":"OCA\\Activity\\MailQueueHandler","type":"->"},{"file":"/var/www/nextcloud/lib/private/BackgroundJob/Job.php","line":54,"function":"run","class":"OCA\\Activity\\BackgroundJob\\EmailNotification","type":"->"},{"file":"/var/www/nextcloud/lib/private/BackgroundJob/TimedJob.php","line":60,"function":"execute","class":"OC\\BackgroundJob\\Job","type":"->"},{"file":"/var/www/nextcloud/cron.php","line":152,"function":"execute","class":"OC\\BackgroundJob\\TimedJob","type":"->"}],"File":"/var/www/nextcloud/lib/private/Log.php","Line":405,"message":"Error while running background job (class: OCA\\Activity\\BackgroundJob\\EmailNotification, arguments: )","CustomMessage":"Error while running background job (class: OCA\\Activity\\BackgroundJob\\EmailNotification, arguments: )"},"id":"632879e857023"}

Additional info

No response

[come-nc]

Culprit is nextcloud/activity@c106a2c
PR incoming

[come-nc]

@AndyXheli Thanks for the report 👍

[q-wertz]

Also happening on NC 24.0.7
Can this be backported?

[come-nc]

Also happening on NC 24.0.7 Can this be backported?

nextcloud/activity#996

Backport to stable23 failed, I’m gonna consider it’s not affected.

[q-wertz]

I only have it on one of my two NC instances…

[core] Error: Error: Object of class OC\User\User could not be converted to string at <<closure>>

0. /var/www/nextcloud/lib/private/Log.php line 402
   strtr()
1. /var/www/nextcloud/lib/private/Log.php line 323
   OC\Log->interpolateMessage()
2. /var/www/nextcloud/lib/private/AppFramework/Logger.php line 125
   OC\Log->logException()
3. /var/www/nextcloud/apps/activity/lib/MailQueueHandler.php line 420
   OC\AppFramework\Logger->logException()
4. /var/www/nextcloud/apps/activity/lib/MailQueueHandler.php line 165
   OCA\Activity\MailQueueHandler->sendEmailToUser()
5. /var/www/nextcloud/apps/activity/lib/BackgroundJob/EmailNotification.php line 61
   OCA\Activity\MailQueueHandler->sendEmails()
6. /var/www/nextcloud/lib/private/BackgroundJob/Job.php line 54
   OCA\Activity\BackgroundJob\EmailNotification->run()
7. /var/www/nextcloud/lib/private/BackgroundJob/TimedJob.php line 60
   OC\BackgroundJob\Job->execute()
8. /var/www/nextcloud/cron.php line 151
   OC\BackgroundJob\TimedJob->execute()

at 2022-11-08T12:15:09+00:00

Raw:

{"reqId":"OoirOPVBXEoOAJs5H1j3","level":3,"time":"2022-11-08T12:10:06+00:00","remoteAddr":"","user":"--","app":"core","method":"","url":"--","message":"Error while running background job (class: OCA\\Activity\\BackgroundJob\\EmailNotification, arguments: )","userAgent":"--","version":"24.0.7.1","exception":{"Exception":"Error","Message":"Object of class OC\\User\\User could not be converted to string","Code":0,"Trace":[{"file":"/var/www/nextcloud/lib/private/Log.php","line":402,"function":"strtr"},{"file":"/var/www/nextcloud/lib/private/Log.php","line":323,"function":"interpolateMessage","class":"OC\\Log","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Logger.php","line":125,"function":"logException","class":"OC\\Log","type":"->"},{"file":"/var/www/nextcloud/apps/activity/lib/MailQueueHandler.php","line":420,"function":"logException","class":"OC\\AppFramework\\Logger","type":"->"},{"file":"/var/www/nextcloud/apps/activity/lib/MailQueueHandler.php","line":165,"function":"sendEmailToUser","class":"OCA\\Activity\\MailQueueHandler","type":"->"},{"file":"/var/www/nextcloud/apps/activity/lib/BackgroundJob/EmailNotification.php","line":61,"function":"sendEmails","class":"OCA\\Activity\\MailQueueHandler","type":"->"},{"file":"/var/www/nextcloud/lib/private/BackgroundJob/Job.php","line":54,"function":"run","class":"OCA\\Activity\\BackgroundJob\\EmailNotification","type":"->"},{"file":"/var/www/nextcloud/lib/private/BackgroundJob/TimedJob.php","line":60,"function":"execute","class":"OC\\BackgroundJob\\Job","type":"->"},{"file":"/var/www/nextcloud/cron.php","line":151,"function":"execute","class":"OC\\BackgroundJob\\TimedJob","type":"->"}],"File":"/var/www/nextcloud/lib/private/Log.php","Line":402,"message":"Error while running background job (class: OCA\\Activity\\BackgroundJob\\EmailNotification, arguments: )","CustomMessage":"Error while running background job (class: OCA\\Activity\\BackgroundJob\\EmailNotification, arguments: )"},"id":"636a487965238"}

But I have to add, that currently the Email server setup is faulty and I have some weird issues with setting the quota. Maybe it comes from an installed app or another issue...