Fatal error: Uncaught Error: Class "GuzzleHttp\Cookie\CookieJar" not found in C:\Users\Administrator\Desktop\xamp\htdocs\sdk\guzzlehttp\guzzle\src\Cookie\SessionCookieJar.php:8 Stack trace: #0 {main} thrown in C:\Users\Administrator\Desktop\xamp\htdocs\sdk\guzzlehttp\guzzle\src\Cookie\SessionCookieJar.php on line 8