Fatal error: Uncaught Error: Interface 'Aws\Crypto\MaterialsProviderInterface' not found in /home/xcddwtvp/public_html/aws-sdk-php/Aws/Crypto/MaterialsProvider.php:4 Stack trace: #0 {main} thrown in /home/xcddwtvp/public_html/aws-sdk-php/Aws/Crypto/MaterialsProvider.php on line 4