There is no prompt to enter a passphrase for the encrpted root volume after update

techinfozone

I have upgraded from 5.4.0-77 to 5.4.0.80 and now there is no prompt to enter a passphrase for the encrpted root volume.
When trying to boot it stops with a message that it is waiting for the encrypted device when it previously prompted for a passphrase.

I can work around this by selecting the old kernel in the grub menu but can't find a fix to boot in the the most recent kernel.

Boot repair didn't work automatically, but I have uploaded a report here. https://paste.ubuntu.com/p/2GxZMbxxmg/

Any suggestions would be welcome!

thanks