Scridgeon

I'm getting that too. The backup works fine on the first run once the container is started, then it fails on subsequent runs. However, it will work only once after a container restart. Can you confirm that behavior?

Same result for me. I removed the Appdata folder and the /output folder location and let the Docker container create them. I'm still getting the same error with the newly created and I even tried changing the folder permissions to 777. Last backup failed: [Errno 1] Operation not permitted: '/output'

I'm having the exact same issue. I verified that destination directory has 777 permissions and also verified in the Docker socket container logs that it is receiving calls from the Unraid Config Guardian Webui.