Try this
- Reboot off the ISO to get a clean start
- Run these two commands for your install type:
Online:
sudo cp /etc/calamares/settings_online.conf /etc/calamares/settings.conf
sudo calamares -D8 | tee endeavour-install.log
Offline:
sudo cp /etc/calamares/settings_offline.conf /etc/calamares/settings.conf
sudo calamares -D8 | tee endeavour-install.log