Fatal error: Uncaught Error: Class 'Aws\Multipart\AbstractUploader' not found in /Applications/XAMPP/xamppfiles/htdocs/Project_April/Aws/Glacier/MultipartUploader.php:16 Stack trace: #0 {main} thrown in /Applications/XAMPP/xamppfiles/htdocs/Project_April/Aws/Glacier/MultipartUploader.php on line 16