package grub-efi-amd64-signed 1.93.14+2.02-2ubuntu8.13 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Charles Massey]

When installing Lubuntu 18.04 on a lenovo ideapad 320-15iap laptop..install always hangs at "installing grub2 package". I've tried multiple times, with fastboot on and off, secure boot on and off, etc. I have even tried boot repair, with no success. I'm using grub2win just to be able to boot into Lubuntu. I have tried the forums for help and all the the suggestions were unsuccessful. I would like to use linux systems more so I can hopefully move away from windows once and for all, and while I've found a temporary fix, I would prefer everything be right. Thanks in advance for looking into this and any assistance you can offer.

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: grub-efi-amd64-signed 1.93.14+2.02-2ubuntu8.13
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
Date: Tue Aug 6 17:55:36 2019
ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3ubuntu1
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.3
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.93.14+2.02-2ubuntu8.13 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)