Fatal error: Uncaught Error: Class "GuzzleHttp\Psr7\Request" not found in C:\Apache24\htdocs\cms_upgrade\vendor\guzzlehttp\psr7\src\ServerRequest.php:25 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\guzzlehttp\psr7\src\ServerRequest.php on line 25