Update Nextcloud 15.0.4 - 15.0.5 - Check for expected files

Hi, I would like to update Nextcloud 15.0.4 (running on Raspberry with Raspbian) to Nextcloud 15.0.5 via WebUpdate (Browser). Now I receive Error "Check for expected files
The following extra files have been found:

  • admin
  • custom_disable_timer
  • pihole"

I installed Pihole without lighthttpd so that pihole instance is running with existing apache (same for nextcloud). There are no problems except I don’t know how to perform update now. I also tried via cli without success. I would be glad if you could help me. Thank you in advance.

Start update? [y/N] y

Info: Pressing Ctrl-C will finish the currently running s
tep and then stops the updater.

[✘] Check for expected files failed
The following extra files have been found:
admin
custom_disable_timer
pihole

Update failed. To resume or retry just execute the update
r again.

Br Martin