Fatal error: Uncaught Error: Interface "GuzzleHttp\Cookie\CookieJarInterface" not found in I:\www\php_vendor_tests\vendor\guzzlehttp\guzzle\src\Cookie\CookieJar.php:11 Stack trace: #0 {main} thrown in I:\www\php_vendor_tests\vendor\guzzlehttp\guzzle\src\Cookie\CookieJar.php on line 11