Fatal error: Uncaught Error: Class 'GuzzleHttp\Command\ServiceClient' not found in /opt/lampp/htdocs/vendor/guzzlehttp/guzzle-services/src/GuzzleClient.php:13 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/vendor/guzzlehttp/guzzle-services/src/GuzzleClient.php on line 13