Fatal error: Uncaught Error: Class 'Aws\Signature\SignatureV4' not found in C:\xampp\htdocs\webservices\2911inovarservice-order\vendor\aws\aws-sdk-php\src\Signature\S3SignatureV4.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\webservices\2911inovarservice-order\vendor\aws\aws-sdk-php\src\Signature\S3SignatureV4.php on line 10