Fatal error: Uncaught Error: Class "Google\AuthHandler\Guzzle6AuthHandler" not found in E:\bin\Apache24\htdocs\composer\vendor\google\apiclient\src\AuthHandler\Guzzle7AuthHandler.php:23 Stack trace: #0 {main} thrown in E:\bin\Apache24\htdocs\composer\vendor\google\apiclient\src\AuthHandler\Guzzle7AuthHandler.php on line 23