"We're sorry; the installer crashed" - ubiquity 2.18.8.13

ubiquity 2.18.8.13
ApporVersion 2.14.1-Oubuntu3.21
Architecture amd64
CasperVersion 1.340.2
Date Nov 29 11:54 2018
DistroRelease Ubuntu 14.4
BOOT_IMAGE=/multiboot/ubuntu-14.04.5-desktop-amd64/casper/vmlinuz.efi file=...
LiveMediaBuild it
PackageArchitecdture amd64
ProcEnviron PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash
ProcVersionSignature Ubuntu 4.4.0-31.50-14.04.1-generic 4.4.13
SourcePackage ubiquity
Tags trusty ubiquity-2.18.8.13 ubuntu
UbiquityDebug
UbiquityPartman
UbiquitySyslog
Uname Linux 4.4.0-1-generic x86_64
UpgradeStatus No upgrade log present...

>Please attach the files /var/log/syslog and /var/log/partman to your bug.
Don't see how to do that on this launchpad webpage:
 https://bugs.launchpad.net/ubuntu/+source/ubiquity/+filebug/6b7ab4ac-f3f8-11e8-a586-0025b3df357ad.net/ubuntu/+source/ubiquity/+filebug/6b7ab4ac-f3f8-11e8-a586-0025b3df357a

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.18.8.13
ProcVersionSignature: Ubuntu 4.4.0-31.50~14.04.1-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CasperVersion: 1.340.2
Date: Thu Nov 29 11:54:42 2018
InstallCmdLine: BOOT_IMAGE=/multiboot/ubuntu-14.04.5-desktop-amd64/casper/vmlinuz.efi file=/cdrom/multiboot/ubuntu-14.04.5-desktop-amd64/preseed/ubuntu.seed boot=casper cdrom-detect/try-usb=true noprompt floppy.allowed_drive_mask=0 ignore_uuid live-media-path=/multiboot/ubuntu-14.04.5-desktop-amd64/casper/ initrd=/multiboot/ubuntu-14.04.5-desktop-amd64/casper/initrd.lz quiet splash ---
LiveMediaBuild: It
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)