Fatal error: Uncaught Error: Interface "Psr\Http\Server\MiddlewareInterface" not found in /srv/www/htdocs/moodle/lib/classes/router/middleware/uri_normalisation_middleware.php:36 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/classes/router/middleware/uri_normalisation_middleware.php on line 36