Remote backup task quit working : constraint failed UNIQUE constraint failed: Remotevolume.Name, Remotevolume.State

On initial run using rclone interface I received warnings.Same on second run again.
The first seems to be related to the fact I used the original WEBDAV-bsed job as base. It seems the has some auth option still activated- no problem.
The other is quite strange again a file seems to be spoilt with lenght misfit - no idea why this is not classified as an error

2022-10-01 01:22:00 +02 - [Warning-Duplicati.Library.Main.Controller-UnsupportedOption]: The supplied option --auth-username is not supported and will be ignored
2022-10-01 01:22:10 +02 - [Warning-Duplicati.Library.Main.Operation.FilelistProcessor-MissingRemoteHash]: remote file duplicati-b536ad8f6b21f498081f1d6835fcd586d.dblock.zip.aes is listed as Uploaded with size  but should be 52365517, please verify the sha256 hash "Jg7iV0zBY1p5UDv5+5VDSsEE097ErAVslqbXCoO4Faw="
2022-10-01 01:25:18 +02 - [Warning-Duplicati.Library.Main.Operation.FilelistProcessor-MissingRemoteHash]: remote file duplicati-b536ad8f6b21f498081f1d6835fcd586d.dblock.zip.aes is listed as Uploaded with size 5337088 but should be 52365517, please verify the sha256 hash "Jg7iV0zBY1p5UDv5+5VDSsEE097ErAVslqbXCoO4Faw="

I download the file: reported length is 5337088, decrypt says

SharpAESCrypt d *** duplicati-b536ad8f6b21f498081f1d6835fcd586d.dblock.zip.aes
Error: File length is invalid

This is very similar to the original problem we started with.

How to check SHA256, Generating SHA256 with Total commander returns this

057a7999fdbdd87e5a079db40f1509739cbd180c0dcffcd87275a76946c4218d *duplicati-b536ad8f6b21f498081f1d6835fcd586d.dblock.zip.aes