While Reinstalling a seemingly broken ubuntu install, the installer crashes

[Everett]

My Ubuntu install refused to boot after resizing some partitions for another OS (Ubuntu 10.04), so I decided to reinstall, but while doing that the installer crashed after I selected Reinstall. The partition with Ubuntu 18.04 (the one that refused to boot) was labelled as the boot partition. I ended up deleting the partition with ubuntu 10.04. Maybe I did not do it correctly but theoretically deleting that partition shouldn't affect the other partition. Maybe I did something wrong but I do not know.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.6
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CasperVersion: 1.394
CurrentDesktop: ubuntu:GNOME
Date: Fri Nov 30 01:50:07 2018
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
LiveMediaBuild: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)