first post so please be gentle.
I set up a nextcloudpi vm in a proxmox ve and got it up and running after a few issues. In order to have a separate drive to back up my data, I connected a btrfs USB drive according to this tutorial: Getting started with NextCloudPi on Proxmox
It showed up, so I edited the fstab and I think this is where everything went wrong. A reboot did not work and I am stuck in emergency mode (see screenshot). Is there any way to edit fstab now?