Fatal error: Uncaught Error: Interface 'Aws\Signature\SignatureInterface' not found in /Applications/XAMPP/xamppfiles/htdocs/Project_April/Aws/Signature/SignatureV4.php:13 Stack trace: #0 {main} thrown in /Applications/XAMPP/xamppfiles/htdocs/Project_April/Aws/Signature/SignatureV4.php on line 13