"Class "Concrete\Core\Panel\PanelController" not found"

Developing with Concrete
1

Hey there team I am trying to add a slide out panel to my package like the add content button - I have managed to get the slide out working - yay! but no content is loading - after some research and trying to load the file manually i get this returned, any ideas?

“Class “Concrete\Core\Panel\PanelController” not found”

Cheers

SCR-20250423-jshq
SCR-20250423-jshq1343×597 82 KB

2

It’s exactly that. That class doesn’t exist.
The panel controller classes are in Concrete\Controller\Panel but none is called PanelController.