Pagetree not shown due to error in TYPO3\CMS\Backend\Controller\Page\TreeController
Whenever I create a BE-User-Group and a BE-User (gave him the group) and change to the User (normal-user) I get an error:
Page tree error - 500
Got unexpected response from the server. Please check logs for details.
And the log entry:
Core: Exception handler (WEB): Uncaught TYPO3 Exception: Cannot use object of type __PHP_Incomplete_Class as array | Error thrown in file /var/www/share/xxx.xxx.de/app/releases/13/web/typo3/sysext/backend/Classes/Controller/Page/TreeController.php in line 190. Requested URL: https://xxx.xxx.de/typo3/index.php?route=%2Fajax%2Fpage%2Ftree%2FfetchData&token=--AnonymizedToken--
We have the same error in different installations -> same TYPO3 version
Have done all tasks in the wizard. After that I cleared all caches after run wizard.
Updated by Simon Gilli 4 months ago
Just asked the reporter (https://forge.typo3.org/users/44360) for feedback see https://typo3.slack.com/archives/C025BQLFA/p1596549433087500?thread_ts=1591172567.054300&cid=C025BQLFA