Fatal error: Uncaught Error: Interface 'Aws\Crypto\MaterialsProviderInterface' not found in /var/www/html/servicios/SDKAmazon/Aws/Crypto/MaterialsProvider.php:4 Stack trace: #0 {main} thrown in /var/www/html/servicios/SDKAmazon/Aws/Crypto/MaterialsProvider.php on line 4