Update error. What can i do?

[stevef]

This could be something to do with BIOS/UEFI, perhaps secure boot setting or maybe partitioning so more information about the system and what was happening before the problem might help.

Can you provide details of your hardware and the Linux Lite install ?
Is this a dual boot system ?
Is this a brand new installation of Linux Lite ?

If the Linux Lite system has worked well before and only started giving a problem since the upgrade to 5.15.0-88 then is there anything that changed before the upgrade ?  Do you have any System Restore Utility (aka Timeshift) snapshots taken before the upgrade ?

[alifunk]

============ Log ===========

Procesando disparadores para linux-image-5.15.0-88-generic (5.15.0-88.98) ...
/etc/kernel/postinst.d/dkms:
 * dkms: running auto installation service for kernel 5.15.0-88-generic
   ...done.
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-5.15.0-88-generic
/etc/kernel/postinst.d/zz-update-grub:
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found background: /boot/grub_linux_lite.png
Found background image: /boot/grub_linux_lite.png
Found linux image: /boot/vmlinuz-5.15.0-88-generic
Found initrd image: /boot/initrd.img-5.15.0-88-generic
Found linux image: /boot/vmlinuz-5.15.0-87-generic
Found initrd image: /boot/initrd.img-5.15.0-87-generic
Found linux image: /boot/vmlinuz-5.15.0-86-generic
Found initrd image: /boot/initrd.img-5.15.0-86-generic
Found linux image: /boot/vmlinuz-5.15.0-82-generic
Found initrd image: /boot/initrd.img-5.15.0-82-generic
Found linux image: /boot/vmlinuz-5.15.0-79-generic
Found initrd image: /boot/initrd.img-5.15.0-79-generic
Found linux image: /boot/vmlinuz-5.15.0-52-generic
Found initrd image: /boot/initrd.img-5.15.0-52-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
Warning: os-prober will not be executed to detect other bootable partitions.
Systems on them will not be added to the GRUB boot configuration.
Check GRUB_DISABLE_OS_PROBER documentation entry.
done
Se encontraron errores al procesar:
 grub-efi-amd64-signed
E: Sub-process /usr/bin/dpkg returned an error code (1)