# Backup Failed - Could not find file "" - Help! **URL:** https://forum.duplicati.com/t/backup-failed-could-not-find-file-help/16760 **Category:** Support **Created:** [September 8, 2023, 3:56pm UTC](https://forum.duplicati.com/t/backup-failed-could-not-find-file-help/16760 "2023-09-08T15:56:12Z") **Posts on this page:** 1 **Showing post:** 2
### Author: ![gpatel-fr](https://forum.duplicati.com/letter_avatar_proxy/v4/letter/g/7993a0/32.png) [@gpatel-fr](https://forum.duplicati.com/u/gpatel-fr) #### Post date: [September 10, 2023, 5:07am UTC](https://forum.duplicati.com/t/backup-failed-could-not-find-file-help/16760/2 "2023-09-10T05:07:52Z")
> [@Randy](#): > > For context, I am using portainer Well, that’s the first time I see the word. Computer are long, life is short. Help will be limited from my part. > [@Randy](#): > > I can configure the backup and all “tests” for destination and source pass during backup configuration That don’t prove much about anything. For most backends - I think the only exception is Ftp backends - the ‘test’ during backup is very limited, it’s basically a verification that a list call don’t return an error. There is no attempt at writing a file. Just verified: it’s the same for the file backend. FTR a simple search of this forum returns the following post: > [@Could not find file ""](https://forum.duplicati.com/t/could-not-find-file/14961): > > Hi, I have Duplicati running on my Fedora Core server in a docker container. Duplicati is set up to backup 2 local folders to my QNAP NAS. I tried mounting the QNAP via nfs and via cifs. This setup used to work, but I reinstalled the OS on my server and now does not anymore. The backup job starts and after a few seconds throws the error “Could not find file “””. When starting the backup job via Commandline I receive the following stack trace Backup started at 9/11/2022 8:35:55 PM Checking remo… It’s the very same error message so there is hope of finding a solution by fiddling with the container configuration. --- _[View the full topic](https://forum.duplicati.com/t/backup-failed-could-not-find-file-help/16760)._