NC-Client activity-list filter "warning nextcloud.sync.propagator "

Hello,
the Nextcloud desktop client 3.7.4 (Windows10) briefly shows me an error:
ā€œDateinamen, welche das Zeichen ":" enthalten, werden von diesem Dateisystem nicht unterstĆ¼tzt.ā€
After the next synchronization, the error is no longer displayed.
Doing it via the debug log is very time consuming.
2023-03-10 12:14:43:607 [ warning nextcloud.gui.activity C:\Users\sysadmin\AppData\Local\Temp\2\windows-14239\client-building\desktop\src\gui\tray\usermodel.cpp:716 ]:
Item ā€œProjekte/TRASH/Test1:50_Planā€ retrieved resulted in error ā€œDateinamen, welche das Zeichen ":" enthalten, werden von diesem Dateisystem nicht unterstĆ¼tzt.ā€
2023-03-10 12:14:43:608 [ info nextcloud.gui.activity C:\Users\sysadmin\AppData\Local\Temp\2\windows-14239\client-building\desktop\src\gui\tray\activitylistmodel.cpp:555 ]:
Error successfully

Via OwnCloud client there is a button Activity ā†’ Not synchronized.
What possibility do I have to view the unsynced files later?

The following solution created via a task job:

  1. decompress *_nextcloud.log.gz
  2. filter via findstr for "warning nextcloud.sync.propagator ".

    findstr /N /C:"warning nextcloud.sync.propagator " 202???_???_nextcloud.log.?

  3. Evaluate results manually

Very incomprehensible, I had hoped that there was another solution.