nao consigo instalar no meu pc

[gutemberg antonio da silva]

nao sei identificar o erro

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.12 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 4.18.0-15.16~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-15-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun May 26 23:49:17 2019
InstallCmdLine: BOOT_IMAGE=/multiboot/ubuntu-18.04.2-desktop-amd64/casper/vmlinuz file=/cdrom/multiboot/ubuntu-18.04.2-desktop-amd64/preseed/ubuntu.seed boot=casper only-ubiquity cdrom-detect/try-usb=true noprompt floppy.allowed_drive_mask=0 ignore_uuid live-media-path=/multiboot/ubuntu-18.04.2-desktop-amd64/casper/ initrd=/multiboot/ubuntu-18.04.2-desktop-amd64/casper/initrd quiet splash ---
ProcEnviron:
 LANGUAGE=pt_BR.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pt_BR.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Eduardo Barretto (ebarretto)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.