What do you mean with “right now im on a snapshot”? I guess you booted into a btrfs-snapshot?
If so, your snapshot might be read-only, so the update process cannot write to disk (and that is what your error message says over and over). You will have to create a writeable snapshot from your snapshot first (don’t just set it to writeable like some people on the internet advise you to!).
Here is a good tutorial on how to recover your system from a btrfs snapshot:
Or did you just restore a Snapshot with Snapper of btrfs-Assistant? In that case, I have no idea.