Preparing to unpack .../usbutils_1%3a013-3_amd64.deb ...
Unpacking usbutils (1:013-3) over (1:013-1) ...
Preparing to unpack .../grub-efi-amd64-signed_1.158+2.04-1ubuntu37_amd64.deb ...
Unpacking grub-efi-amd64-signed (1.158+2.04-1ubuntu37) over (1.157+2.04-1ubuntu37) ...
Setting up grub-efi-amd64-signed (1.158+2.04-1ubuntu37) ...
Trying to migrate /boot/efi into esp config
Installing grub to /boot/efi.
Installing for x86_64-efi platform.
grub-install: warning: Cannot read EFI Boot* variables.
grub-install: warning: read_file: could not read from file: Input/output error.
grub-install: warning: vars_get_variable: read_file(/sys/firmware/efi/vars/Boot0006-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var) failed: Input/output error.
grub-install: warning: efi_get_variable: ops->get_variable failed: Input/output error.
grub-install: error: failed to register the EFI boot entry: Input/output error.
dpkg: error processing package grub-efi-amd64-signed (--configure):
 installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1