Mounting a share in fstab (Debian 11) fails with BAD_NETWORK_NAME

I can run sudo mount -t cifs -o guest,user=root //SERVER_NAME/SHARE /mnt/FOLDER without issue. However, I cannot run mount -a or mount /mnt/folder when I have this line in fstab: //SERVER_NAME/SHARE /mnt/FOLDER cifs guest,user=root 0 0 This seems to resemble this error: https://bugs.launchpad.net/ubuntu/+source/cifs-utils/+bug/1896699