Fatal error: Uncaught Error: Class "Aws\Exception\AwsException" not found in C:\xampp\htdocs\vendor\aws\aws-sdk-php\src\AlexaForBusiness\Exception\AlexaForBusinessException.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\vendor\aws\aws-sdk-php\src\AlexaForBusiness\Exception\AlexaForBusinessException.php on line 9