Unmoveable file prevents archiving of data

The file "MSM123_20231221T122704.txt" cannot be moved, deleted or renamed, probably due to an error in nextcloud.

Therefore, moving any file to the archive folder is prevented.

Therefore, the working directory contains > 3500 files (as of 2024-01-04).

Therefore, import tries to import all > 3500 files with every import.

Therefore, import takes > 60 minutes.

Therefore, scheduled import FAIL with a timeout.

Quick fix is to ignore the unmoveable file.