App provider only office stops working

[zjean]

Describe the bug

I have a docker stack with ocis, OnlyOffice and app-provider for OnlyOffice. When I startup the containers, everything works well.
However, after some time (within a day), the OnlyOffice integration stops working.
In that case, I have to restart the app provider container, and the integraiton works again.

Steps to reproduce

Steps to reproduce the behavior:

1. Setup the wopi integration for OnlyOffice based on the example
2. Wait for some time
3. Try to open an office document via OnlyOffice

Expected behavior

The document opens in the web version of OnlyOffice

Actual behavior

I get an error, that states that the document could not be opened.

Setup

Please describe how you started the server and provide a list of relevant environment variables or configuration files.

OCIS_XXX=somevalue
OCIS_YYY=somevalue
PROXY_XXX=somevalue

Additional context

Add any other context about the problem here.
What can I do to track this down? I have set the logs of the app provider container to trace, but can't find the exact timeframe to look for the logs. When running on Error, the logs don't say anything.

[micbar]

This issue is known and currently already worked on. See #3832