Note for others who encounter the same problem: I never enabled any legacy experience. I only did the tutor upgrade from Lilac to Maple with
docker system prune -a
tutor local stop
sudo rsync -avr "$(tutor config printroot)"/ /tmp/tutor-backup/
sudo curl -L "https://github.com/overhangio/tutor/releases/download/v13.0.3/tutor-$(uname -s)_$(uname -m)" -o /usr/local/bin/tutor
sudo chmod 0755 /usr/local/bin/tutor
tutor local upgrade --from=lilac
tutor config save
tutor images build openedx
tutor local quickstart
And when it was done, I had this error. Because apparently the MFE plugin was not enabled by default. So I had to do
tutor plugins enable mfe
tutor config save
tutor local quickstart
to resolve the issue and fix the “view live” not working.
p.s. another undocumented issue is that if you were already using forums you need to re-enable them too
tutor plugins enable forum
tutor config save
tutor local quickstart