Fatal error: Uncaught Error: Class 'Aws\Api\Serializer\RestSerializer' not found in /home/app/htdocs/ninja/vendor/aws/aws-sdk-php/src/Api/Serializer/RestJsonSerializer.php:11
Stack trace:
#0 {main}
thrown in /home/app/htdocs/ninja/vendor/aws/aws-sdk-php/src/Api/Serializer/RestJsonSerializer.php on line 11