Fatal error: Uncaught Error: Interface 'GuzzleHttp\Cookie\CookieJarInterface' not found in C:\inetpub\wwwroot\mantis\vendor\guzzlehttp\guzzle\src\Cookie\CookieJar.php:10 Stack trace: #0 {main} thrown in C:\inetpub\wwwroot\mantis\vendor\guzzlehttp\guzzle\src\Cookie\CookieJar.php on line 10