Fatal error: Uncaught Error: Interface "Psr\Http\Server\MiddlewareInterface" not found in /var/www/html/cwtypo3/vendor/typo3/cms-adminpanel/Classes/Middleware/AdminPanelDataPersister.php:34 Stack trace: #0 {main} thrown in /var/www/html/cwtypo3/vendor/typo3/cms-adminpanel/Classes/Middleware/AdminPanelDataPersister.php on line 34