We just noticed that the automatically generated category listing all manufacturers was broken by the last security update.
We are working on it.
Sorry for not noticing earlier.
Update:
This turned out to be a PHP8 bug in a plugin.
We write a short bug-report with the exact line and fix required.
Not five minutes later there was a new release of that module with out proposed fix.
The shop is running fine again.
broken:
fixed:
