(err file system case insensitive). File exists (code: 17) (untrue) so whats the issue

Hi

I see the above error, its clearly not true as i can use upper and lower case file names on that storage, so what is UrBackup testing to come up with the false claim (and its not backing anything up).

We have Ubuntu 20.04, we use the MOUNT command to “map” the drive from a NAS, the volume on the NAS is EXT4. So if we use Nautilus in Ubuntu (thats hosting UrBackup) we can create a folder in both upper and lower case names on that exact volume with the same UNC that UrBackup uses, so why does UrBackup say it cant (ironcially, it does create folders with upper and lower case names, so UrBackup appears working as well, although backup is creating an error anyway)?

Its not the Ubuntu, if we move the storage to the LOCAL drive it works fine (which is also EXT4), so what is it seeing (falsely) on the mount volume that is not replicated in Nautilus