Fatal error: Uncaught Error: Interface "Aws\AwsClientInterface" not found in C:\xampp\htdocs\uploadPdf\vendor\aws\aws-sdk-php\src\MultiRegionClient.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\uploadPdf\vendor\aws\aws-sdk-php\src\MultiRegionClient.php on line 9