[Bug]: File Picker with SAML user results in "Error: Invalid owner type" with User Migration app

[LokeYourC3PH]

⚠️ 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 OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

I've seen a similar issue here "#45420", and so I will just reference the entire bug thread I have already created here: nextcloud/user_saml#882

I feel as if this could be a problem with NextCloud itself, which is why I am opening a thread here as well. Please advise.

Steps to reproduce

Refer to: nextcloud/user_saml#882

Expected behavior

Refer to: nextcloud/user_saml#882

Nextcloud Server version

29

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.1

Web server

Apache (supported)

Database engine version

MySQL

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

None

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

Refer to: https://github.com/nextcloud/user_saml/issues/882

List of activated Apps

Refer to: https://github.com/nextcloud/user_saml/issues/882

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

Refer to: https://github.com/nextcloud/user_saml/issues/882

Additional info

Refer to: nextcloud/user_saml#882

[LokeYourC3PH]

For some additional information: If I use the file picker of another app, say "Photos", it works absolutely fine.

However, even when logging in with a SAML account, I get a message from the "Photos" app saying "Could not load photos folder", with a similar error message in the Firefox console:

[FATAL] photos: Unexpected Error "Invalid owner type" 
Object { app: "photos", uid: "7", level: 2, error: Error }
[ConsoleLogger.js:78:18](webpack:///photos/node_modules/@nextcloud/logger/dist/ConsoleLogger.js)
    value ConsoleLogger.js:78
    value ConsoleLogger.js:105
    n userConfig.js:50
Uncaught (in promise) Error: Couldn't fetch photos upload folder
    n userConfig.js:55

So this seems to be related.

[ivanandre]

Same issue here. Nextcloud Hub 9 (version 30.0.0).
From the dashboard or Photos app, I get the error inside the Console.
userConfig.js:33 [FATAL] photos: Unexpected Error "Invalid owner type" {app: 'photos', uid: '218018', level: '2', error: Error: Invalid owner type