This seems to be the relevant error:
[ 760.222181] efivars: DataSize & Attributes must be valid! Can't access efivars filesystem at /sys/firmware/efi/efivars, aborting
This seems to be the relevant error:
[ 760.222181] efivars: DataSize & Attributes must be valid! efi/efivars, aborting
Can't access efivars filesystem at /sys/firmware/