Comment 2 for bug 1815233

Hello Vitaliy, it looks like there's no EFI partition on the disk, but it was trying to do an EFI install.

I hope this helps.

Thanks

Feb 8 18:50:23 ubuntu ubiquity: Setting up grub-efi-amd64-signed (1.93.11+2.02-2ubuntu8.10) ...
Feb 8 18:50:24 ubuntu ubiquity: Выполняется установка для платформы x86_64-efi.
Feb 8 18:50:24 ubuntu ubiquity: grub-install: ошибка: не удалось найти каталог EFI.
Feb 8 18:50:24 ubuntu ubiquity: dpkg: error processing package grub-efi-amd64-signed (--configure):
Feb 8 18:50:24 ubuntu ubiquity: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
Feb 8 18:50:24 ubuntu ubiquity: Errors were encountered while processing:
Feb 8 18:50:24 ubuntu ubiquity: grub-efi-amd64-signed
Feb 8 18:50:26 ubuntu ubiquity: E: Sub-process /usr/bin/dpkg returned an error code (1)