The link to the modern team site with no group is broken. It now creates Document Centres instead of team sites. It was working perfectly fine a couple of days ago, so clearly Microsoft changed something and didn’t test it properly – again. Check your tenants and log calls immediately so they can fix this with some urgency.
Response just received from Microsoft :
Post blog update : This seems to be fixed now.
god finding so that there is a log for others. thanks