Failed to mount /boot. Dependency failed for Local File System

Hello, I have the same issue. This problem appear every time I update the linux-kernel and linux-header to the version 6.6.x. The 6.5.9 is fine, so if you have this problem you can go in the emergency mode, which is run automaticly when the os can’t mount the disk and run the command “downgrad”.

You don’t need to boot on a live usb. Hope this help.