Fatal error: Uncaught Error: Class "Aws\Api\Serializer\QueryParamBuilder" not found in C:\Apache24\htdocs\ControlMantWeb\vendor\aws\aws-sdk-php\src\Api\Serializer\Ec2ParamBuilder.php:10 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\ControlMantWeb\vendor\aws\aws-sdk-php\src\Api\Serializer\Ec2ParamBuilder.php on line 10