Cannot edit Document in OnlyOffice (but others work)

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Hi Devs ,

Probably you can give me a hint.

Nextcloud version: 19.0.4
Operating system and version: Debian Linux 4.19.0-9-amd64 x86_64
Apache or nginx version: Apache2 latest
PHP version: PHP 7.3.19

The issue you are facing:

In one Documet I cant edit: There is always this window:

image

Is this the first time you’ve seen this error? (Y/N): No, but only in this Document (Copy/Pasting Document and Rename it does not work either)

Steps to replicate it:

  1. Open Excel Document in Browser OnlyOffice
  2. Click into it (trsy to edit)
  3. Editing not possible see screenshot

The output of your Nextcloud log in Admin > Logging:

I could not see logging there.

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

If necessary I will provide cause it is a bit tricky.

The output of your Apache/nginx/system log in /var/log/____:

If necessary I will provide cause it is a bit tricky.

Thank you very much.