Unable to boot into DietPi | Failed to load DietPi-Globals

ok you are missing 2 lines in your current fstab.

pls can you add the following at the end of the file into PHYSICAL DRIVES section and do a reboot

PARTUUID=6c586e13-02 / ext4 noatime,lazytime,rw 0 1
PARTUUID=6c586e13-01 /boot vfat noatime,lazytime,rw 0 2