The relevant error from your logs is this:
Nov 22 12:29:02 ubuntu grub-installer: /usr/sbin/grub-setup: предупр:
This GPT partition label has no BIOS Boot Partition; embedding won't be
possible!.
So you need to create a bios_grub partition to boot a bios based PC from
a GPT disk.
** Changed in: grub-installer (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1254013
Title:
the ubuntu installator failed to install grub
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