Kernel 5.10.43 broken - 5.12.11 boots fine (Solved)

Issues & Assistance Newbies
#1

The LTS kernel is broken - this shows a journalctl -xb it says that something with boot/efi is broken.
5.12.11 Amd works fine.
Error: mde — ImgBB
Solved: i reinstalled the kernel and it boots.

#2