Fatal error: Uncaught Error: Interface "Psr\Http\Message\MessageInterface" not found in /home/rcmch/test.m-s-i.ch/vendor/psr/http-message/src/RequestInterface.php:24 Stack trace: #0 {main} thrown in /home/rcmch/test.m-s-i.ch/vendor/psr/http-message/src/RequestInterface.php on line 24