After backing up multiple courses without issue I am suddenly getting this error (error error_opening_file) when I attempt to backup. Also when I try to restore courses that had successfully backed up it is now saying (The selected file is not a valid Totara backup file and can't be restored.). Any ideas?
Hi Sarah
Is the course you are backing up have any external plugins - is the file from a newer version of Totara or a different LMS somehow,
If this doesn't help then can you or your Totara create a support ticket with a copy of the backup without user data if possible,
Regards
Sarah, if it helps, this is how to determine the version of the backup file, which is basically a tarball (TAR/GZ archive)
You'll be presented with a bunch of useful info on the backup, including version info.
regards, Andrew