Fatal error: Uncaught Error: Interface 'Psr\Http\Server\MiddlewareInterface' not found in /var/www/vhosts/www.thomas-bartholomaeus.de/content/neoscms/Packages/Framework/Neos.FluidAdaptor/Classes/Core/Widget/AjaxWidgetMiddleware.php:33 Stack trace: #0 {main} thrown in /var/www/vhosts/www.thomas-bartholomaeus.de/content/neoscms/Packages/Framework/Neos.FluidAdaptor/Classes/Core/Widget/AjaxWidgetMiddleware.php on line 33