Hello @JorgeB, I think I'm experiencing something similar to this... A few weeks ago, I updated Unraid to Version: 6.12.0 and upon rebooting the server, I'm getting the same error message as the one in the title of this post on the disks where I have BTRFS format. Could you help me resolve this? Thank you.
Edit: I have already tried both solutions mentioned in this thread, but without any positive results.
diagnostics-20230708-1621.zip