Uploading of iCloud corrupted photo causes photo auto-upload to halt.

Steps to reproduce

1. Somehow get an icloud corrupted photo in your photos app
2. Setup nextcloud auto-upload
3. Once Nextcloud tries to sync corrupted photo, all uploads halt and no error is shown or no way to continue

Expected behaviour

Ideally the user should be told that a file cannot be synced and the auto-upload should continue.

Actual behaviour

The auto-upload stops and no additional photos are uploaded. Trying to restart the auto upload results in the same error once the upload reaches the corrupted icloud photo.

Workaround

• Check last uploaded file via Nextcloud web interface.
• Find next file in ios Photos and delete (probably is corrupted).
• Return to Nextcloud app and download will continue after “file not found” error is displayed:
  

Screenshots

Corrupted photo in Photos app looks like:

Reasoning or why should it be changed/implemented?

This issue prevented me from switching to Nextcloud for months. Once I discovered the workaround, I'm really loving the app!
I would suspect that I'm not the only one out there that has these 'corrupted' icloud phots in my Photos app.

Environment data

** iOS Version ** iOS 15.1

Nextcloud iOS app version: 4.0.6.0

Server operating system: Ubuntu

Web server: Apache

Database: MySQL

Nextcloud version: 22.2.0

Start by tracing the iOS app's photo auto-upload flow and reproduce the failure with an iCloud-corrupted photo. The fix should report that the file cannot be synced and continue uploading subsequent photos instead of halting; verify that restarting does not repeatedly stop at the same file.