Says it needs a database schema update. Checks have been flapping all night.
It's because paladox updated it I think. That's when it started anyway.
If we're updating something without even checking it loads, we have a serious issue.
I read the changelog and it mentioned no schema updates https://matomo.org/changelog/matomo-4-10-0/ before I updated and I had a look at the changes done and there wasn't many.
This is resolved now.