Fatal error: Uncaught Error: Interface 'GuzzleHttp\Cookie\CookieJarInterface' not found in D:\xampp\htdocs\psp\backend\vendor\guzzlehttp\guzzle\src\Cookie\CookieJar.php:11 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\guzzlehttp\guzzle\src\Cookie\CookieJar.php on line 11