Backup failed but no errors shown in task's log


I am running Duplicati with succes for a few weeks now.
Yesterday I checked how are things on the server and I saw there was some errors in the logs from “About → View History” - the backup task where failing because the target folder was unmounted :

Duplicati.Library.Interface.FolderMissingException: Impossible de définir le dossier sur /Sauvegardes/, message d’erreur : No such file —> Renci.SshNet.Common.SftpPathNotFoundException: No such file
at Renci.SshNet.Sftp.SftpSession.RequestOpenDir (System.String path, System.Boolean nullOnError) [0x0008b] in <8c66a76a693c4e52b456ec0712c863dd>:0
at Renci.SshNet.Sftp.SftpSession.ChangeDirectory (System.String path) [0x00008] in <8c66a76a693c4e52b456ec0712c863dd>:0
at Renci.SshNet.SftpClient.ChangeDirectory (System.String path) [0x00027] in <8c66a76a693c4e52b456ec0712c863dd>:0
at Duplicati.Library.Backend.SSHv2.ChangeDirectory (System.String path) [0x00028] in :0
— End of inner exception stack trace —

My problem is the task’s logs itself end with no visible error :

How to fix that ?


If a job fails to start due to a critical error like the back end being inaccessible, you won’t see an entry at all in job’s history log. It is logged in the server log, though, from what I recall.

Many people think this should be improved. There’s an open “issue” on the project page to unify the logs, but I don’t know if it’s being actively worked on. Combine logs in GUI · Issue #1152 · duplicati/duplicati · GitHub

For now I mitigate this issue by using email notifications and also