[Bug]: Email sending not working

[anzestrela]

⚠️ This issue respects the following points: ⚠️

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

Bug description

when i try to send an email from nextcloud i get:

TypeError: Cannot assign null to property OCA\Mail\Controller\OutboxController::$userId of type string

    <<closure>>

    OCA\Mail\Controller\OutboxController->__construct()

    /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 116:

    ReflectionClass->newInstanceArgs()

    /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 124:

    OC\AppFramework\Utility\SimpleContainer->buildClass()

    /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 142:

    OC\AppFramework\Utility\SimpleContainer->resolve()

    /var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php - line 493:

    OC\AppFramework\Utility\SimpleContainer->query()

    /var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php - line 465:

    OC\AppFramework\DependencyInjection\DIContainer->queryNoFallback()

    /var/www/nextcloud/lib/private/AppFramework/App.php - line 162:

    OC\AppFramework\DependencyInjection\DIContainer->query()

    /var/www/nextcloud/lib/private/Route/Router.php - line 315:

    OC\AppFramework\App::main()

    /var/www/nextcloud/lib/base.php - line 1056:

    OC\Route\Router->match()

    /var/www/nextcloud/index.php - line 36:

    OC::handleRequest()

but i can recieve emails.

And also i can send emails from another account.

Steps to reproduce

1. add email account (seperate IMAP and SMTP servers)
2. try to send an email

Expected behavior

Email should be sent

Installation method

Official All-in-One appliance

Nextcloud Server version

26

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.1

Web server

Apache (supported)

Database engine version

MariaDB

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

Updated from a minor version (ex. 22.2.3 to 22.2.4)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

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

Configuration report

No response

List of activated Apps

- contactsinteraction: 1.7.0
  - dashboard: 7.6.0
  - dav: 1.25.0
  - federatedfilesharing: 1.16.0
  - federation: 1.16.0
  - files: 1.21.1
  - files_pdfviewer: 2.7.0
  - files_rightclick: 1.5.0
  - files_sharing: 1.18.0
  - files_trashbin: 1.16.0
  - files_versions: 1.19.1
  - fileslibreofficeedit: 1.1.0
  - firstrunwizard: 2.15.0
  - holiday_calendars: 0.3.0
  - integration_openai: 1.0.4
  - logreader: 2.11.0
  - lookup_server_connector: 1.14.0
  - mail: 3.1.1
  - nextcloud_announcements: 1.15.0
  - notes: 4.7.2
  - notifications: 2.14.0
  - oauth2: 1.14.0
  - onlyoffice: 7.8.0
  - password_policy: 1.16.0
  - photos: 2.2.0
  - privacy: 1.10.0
  - provisioning_api: 1.16.0
  - recommendations: 1.5.0
  - related_resources: 1.1.0-alpha1
  - serverinfo: 1.16.0
  - settings: 1.8.0
  - sharebymail: 1.16.0
  - spreed: 16.0.3
  - support: 1.9.0
  - survey_client: 1.14.0
  - systemtags: 1.16.0
  - text: 3.7.2
  - theming: 2.1.1
  - twofactor_backupcodes: 1.15.0
  - updatenotification: 1.16.0
  - user_status: 1.6.0
  - viewer: 1.10.0
  - weather_status: 1.6.0
  - workflowengine: 2.8.0

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

No response

[ChristophWurst]

Dear @anzestrela,

Thank you very much for your bug report.

TypeError: Cannot assign null to property OCA\Mail\Controller\OutboxController::$userId of type string

This "should not happen". It would only happen when an unauthenticated request is sent to the Nextcloud server for this request.

Do you remember if there were any other authentication-related problems last year? Does this still happen?