Fatal error: Uncaught Error: Interface "Aws\Crypto\AesStreamInterface" not found in C:\xampp\htdocs\uploadPdf\vendor\aws\aws-sdk-php\src\Crypto\AesEncryptingStream.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\uploadPdf\vendor\aws\aws-sdk-php\src\Crypto\AesEncryptingStream.php on line 12