Possibly related? System Updater Not Creating initramfs every time it updates the kernel
This describes an issue where a dkms error (like the so-called “non-critical error” in your logs) causes initramfs not to be created (which would be consistent with the kernel panic mention you’re seeing).
That thread has a link to a Bugzilla bug (currently unresolved): 2333757 – initrd is not created if a dkms build fails leaving system boot to fail