Fatal error: Uncaught Error: Class 'Aws\Api\Parser\AbstractParser' not found in /home/wwvicp/public_html/API2/vendor/aws/aws-sdk-php/src/S3/ValidateResponseChecksumParser.php:15 Stack trace: #0 {main} thrown in /home/wwvicp/public_html/API2/vendor/aws/aws-sdk-php/src/S3/ValidateResponseChecksumParser.php on line 15