Repair and Rebuild database fails: Unexpected difference in fileset

Here is again the error message about OneDrive:

2019-01-25 11:50:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: C:\Users\XXX\OneDrive - YYY.849C9593-D756-4E56-8D6E-42412F2A707B
System.IO.IOException: The process cannot access the file ‘C:\Users\XXX\OneDrive - YYY.849C9593-D756-4E56-8D6E-42412F2A707B’ because it is being used by another process.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream…ctor(String path, FileMode mode, FileAccess access, FileShare share)
at Duplicati.Library.Snapshots.SystemIOWindows.FileOpenRead(String path)
at Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.<>c__DisplayClass1_0.<b__0>d.MoveNext()

I’m running the client “Microsoft OneDrive” version 19.002.0107.0008, which is set to mirror various folders. I am not sure how sharepoint is working, nor how it is set up, but I believe that sharepoint is using the onedrive-client for synchronization of files and folders.

I simply got rid of my problem by excluding

C:\Users\XXX\OneDrive - {company name]}
from the backup list. We have stopped using onedrive actively in our company anyway, and the files have been unchanged for many months. So the OneDrive cloud just serves as a form of archive. I am using the opensource solution syncthing today, and have not had any conflicts with duplicati.

So what you ask me to do is to install Smart Sync, and see if it creates problems?