Same problem. Have been trying to fix this all day. Upgraded 19.04 tó 19.10 it failed and enters grub rescue with grub_file_filters not found. Boot-Repair did not help.
/dev/sda1 is my boot (Ext4 512 MB)
/dev/sda2 Partition 2 extended partition 240 GB
/dev/sda5 Partition 5 240 GB LUKS (encrypted)
And a /dev/mapper/luks-xxxxxxx.../ a LVM2 PV
Same problem. Have been trying to fix this all day. Upgraded 19.04 tó 19.10 it failed and enters grub rescue with grub_file_filters not found. Boot-Repair did not help. luks-xxxxxxx. ../ a LVM2 PV
/dev/sda1 is my boot (Ext4 512 MB)
/dev/sda2 Partition 2 extended partition 240 GB
/dev/sda5 Partition 5 240 GB LUKS (encrypted)
And a /dev/mapper/
I am lost and have no idea what to do. :(
Jacob