Fatal error: Uncaught Error: Class "Aws\Crypto\AbstractCryptoClient" not found in C:\xampp\htdocs\vendor\aws\aws-sdk-php\src\S3\Crypto\S3EncryptionClient.php:31 Stack trace: #0 {main} thrown in C:\xampp\htdocs\vendor\aws\aws-sdk-php\src\S3\Crypto\S3EncryptionClient.php on line 31