Fatal error: Uncaught Error: Interface 'GuzzleHttp\Handler\CurlFactoryInterface' not found in D:\xampp\htdocs\psp\backend\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php:20 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php on line 20