I’ve gotten the same error from a backup (previous backup was killed after stalling for two weeks) and subsequent repair attempt:
2026-01-07 21:55:52 -05 - [Error-Duplicati.Library.Main.Controller-FailedOperation]: The operation Backup has failed ConstraintException: Detected 16 file(s) in FilesetEntry without corresponding FileLookup entry
2026-01-08 20:30:51 -05 - [Error-Duplicati.Library.Main.Controller-FailedOperation]: The operation Repair has failed ConstraintException: Detected 16 file(s) in FilesetEntry without corresponding FileLookup entry
How do I fix this?
Thanks… Steve
MacOSX Tahoe 26.1
Duplicati 2.2.0.102
Macbook Pro w/M2 chip
Destination: Google Drive