Installer crashed after choosing / and /home partitions

I had separate partitions prepared for / and /home already formatted with ext.4 so installer only needed to format the swap area, which it said it would. Then it asked about my location and after I confirmed its selection it crashed. It said it would send a report and it opened the browser but its window closed, so I can't attach the syslog and partman files from it. I'm trying to install Ubuntu MATE 20.04. I'll try again and let you know what happens.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.15
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.445
Date: Wed May 6 20:04:47 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu-mate.seed quiet splash ---
LiveMediaBuild: Ubuntu-MATE 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)