package:grub-common:2.04-1ubuntu26.13
Setting up grub-common (2.04-1ubuntu26.13) ...
Job for grub-initrd-fallback.service failed because the control process exited with error code.
See "systemctl status grub-initrd-fallback.service" and "journalctl -xe" for details.
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
Job for grub-common.service failed because the control process exited with error code.
See "systemctl status grub-common.service" and "journalctl -xe" for details.
invoke-rc.d: initscript grub-common, action "restart" failed.
[0;1;31m●[0m grub-common.service - Record successful boot for GRUB
     Loaded: loaded (]8;;file://hosts-pc/lib/systemd/system/grub-common.service/lib/systemd/system/grub-common.service]8;;; enabled; vendor preset: enabled)
     Active: [0;1;31mfailed[0m (Result: exit-code) since Tue 2021-09-14 10:27:29 BST; 23ms ago
    Process: 3822 ExecStartPre=/bin/sh -c [ -s /boot/grub/grubenv ] || rm -f /boot/grub/grubenv; mkdir -p /boot/grub (code=exited, status=0/SUCCESS)
    Process: 3824 ExecStart=/usr/bin/grub-editenv /boot/grub/grubenv unset recordfail [0;1;31m(code=exited, status=1/FAILURE)[0m
   Main PID: 3824 (code=exited, status=1/FAILURE)

Sep 14 10:27:29 hosts-pc systemd[1]: Starting Record successful boot for GRUB...
Sep 14 10:27:29 hosts-pc grub-editenv[3824]: /usr/bin/grub-editenv: error: invalid environment block.
Sep 14 10:27:29 hosts-pc systemd[1]: [0;1;39m[0;1;31m[0;1;39mgrub-common.service: Main process exited, code=exited, status=1/FAILURE[0m
Sep 14 10:27:29 hosts-pc systemd[1]: [0;1;38;5;185m[0;1;39m[0;1;38;5;185mgrub-common.service: Failed with result 'exit-code'.[0m
Sep 14 10:27:29 hosts-pc systemd[1]: [0;1;31m[0;1;39m[0;1;31mFailed to start Record successful boot for GRUB.[0m
dpkg: error processing package grub-common (--configure):
 installed grub-common package post-installation script subprocess returned error exit status 1