Install bug: 20.04 LTS strange OEM install behaviour with LVM encryption

gtk_components/nw…py: not found multiple errors, log rolls.
stuck creating ext4 file system for default oem install partitions.
it also involved NXDOMAIN, downloads while installing was selected
with standard software, not minimal. whoopsie, was not online.
also XDG_RUNTIME_DIR “not owned by us”, us is 0, it is run/user/999.

attempted USB read-only stick install. why does one file have errors?