Fatal error: Uncaught Error: Class 'Aws\Crypto\MaterialsProvider' not found in /Applications/XAMPP/xamppfiles/htdocs/Project_April/Aws/Crypto/KmsMaterialsProvider.php:9 Stack trace: #0 {main} thrown in /Applications/XAMPP/xamppfiles/htdocs/Project_April/Aws/Crypto/KmsMaterialsProvider.php on line 9