从 Ubuntu 18.04 直接升级到 20.04 后，每次安装应用程序时，控制台都会生成以下错误：
Do you want to continue? [Y/n] Setting up grub-efi-amd64-signed (1.142+2.04-1ubuntu26) ... dpkg: error processing package grub-efi-amd64-signed (--configure): installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 10 No apport report written because the error message indicates its a followup error from a previous failure. dpkg: dependency problems prevent configuration of shim-signed: shim-signed depends on grub-efi-amd64-signed | grub-efi-arm64-signed; however: Package grub-efi-amd64-signed is not configured yet. Package grub-efi-arm64-signed is not installed.
dpkg: error processing package …