I have upgraded a small site directly from 2 to 4.
Everything works fine, but I can’t change the titles of existing subpages.
When I reload the panel, the old titles are displayed again.
If I set the status to Draft beforehand and then make the change, it works. Creating new pages does not work either. The following error message appears in the Create dialog:
Kirby\Cms\PageRules::validateTitleLength(): Argument #1 ($title) must be of type string, null given, called in /Users/jwssnr/MATERIAL/ARBEIT/WEBSITES/KIRBY/pfg-sg/kirby/src/Panel/PageCreateDialog.php on line 350
There is certainly a connection and I think I have messed something up with the blueprints, but I don’t know where.
