There are some similar issues out there:
https://feeding.cloud.geek.nz/posts/recovering-from-unbootable-ubuntu-encrypted-lvm-root-partition/
https://bugs.launchpad.net/ubuntu/+source/xubuntu-meta/+bug/1801629
There are some similar issues out there:
https:/ /feeding. cloud.geek. nz/posts/ recovering- from-unbootable -ubuntu- encrypted- lvm-root- partition/
https:/ /bugs.launchpad .net/ubuntu/ +source/ xubuntu- meta/+bug/ 1801629