Bug 419334

SUMMARY

Installation fails almost at the end with error:

"External command finished with errors.
Command apt install -y --no-upgrade -o Acquire::gpgv::Options::=--ignore-time-conflict grub-efi-amd64-signed finished with exit code 100. Output: WARNING: apt does not have a stable CLI interface. Use with caution in scripts. Reading package lists... Building dependency tree... Reading state information... Starting pkgProblemResolver with broken count: 0 Starting 2 pkgProblemResolver with broken count: 0 Done The following NEW packages will be installed: grub-efi-amd64-signed 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 299 kB of archives. After this operation, 3449 kB of additional disk space will be used. Err:1 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 grub-efi-amd64-signed amd64 1.93.15+2.02-2ubuntu8.14 404 Not Found [IP: 91.189.88.152 80] E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/g/grub2-signed/grub-efi-amd64-signed_1.93.15+2.02-2ubuntu8.14_amd64.deb 404 Not Found [IP: 91.189.88.152 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?"


STEPS TO REPRODUCE
1. Install Neon in dualboot with windows
2. Select manual partitioning
3. Make root and /boot/efi partions
4. Start installation

OBSERVED RESULT
Calamares crash

EXPECTED RESULT
Installation done.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Neon Developer Edition/Unstable Edition
KDE Plasma Version: 5.18.80
KDE Frameworks Version: 5.69.0
Qt Version: 5.14.1

ADDITIONAL INFORMATION