lubuntu crashes during instalation

I loaded up latest lubuntu with Universal USB Installer to my USB, then booted it and I tried to install lubuntu on the other USB. Everything was going to be good, I managed to do partitions (1Gb /boot, about 5Gb / and 2Gb /home if I remember correctly) and then I got a pop-up: "installed linux-image-5.3.0-46-generic package post-installation script subprocess returned error exit status 1".

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.14
ProcVersionSignature: Ubuntu 5.3.0-28.30~18.04.1-generic 5.3.13
Uname: Linux 5.3.0-28-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
CasperVersion: 1.394.3
Date: Sun Apr 19 15:07:38 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/lubuntu.seed cdrom-detect/try-usb=true noprompt floppy.allowed_drive_mask=0 ignore_uuid boot=casper only-ubiquity quiet splash ---
LiveMediaBuild: Lubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203)
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)