Upgraded from 11.11.5 to 12.1 and now get ERR_TOO_MANY_REDIRECTS

After upgrading from 11.11.5 to 12.1 successfully I am met with ERR_TOO_MANY_REDIRECTS when visiting.

All services report working and I have tried reconfiguring, db:migrate both checks for db and gitlab report ok.

Not sure what to do.

We gave up and took a break, I went out to get coffee for everyone and when I got back in to work on it again it just started working again. Not sure what happened but I’m not gonna complain.

Everything is working then I guess