Fatal error: Uncaught Error: Class 'Aws\Api\Serializer\RestSerializer' not found in /home/user180fithos/public_html/app/v2/aws/Aws/Api/Serializer/RestXmlSerializer.php:10 Stack trace: #0 {main} thrown in /home/user180fithos/public_html/app/v2/aws/Aws/Api/Serializer/RestXmlSerializer.php on line 10