Fatal error: Uncaught Error: Class "Slim\Psr7\Message" not found in C:\WebServer\core\apache\htdocs\pma\vendor\slim\psr7\src\Response.php:25 Stack trace: #0 {main} thrown in C:\WebServer\core\apache\htdocs\pma\vendor\slim\psr7\src\Response.php on line 25