Fatal error: Uncaught Error: Class 'WPMailSMTP\Vendor\Google\AuthHandler\Guzzle6AuthHandler' not found in E:\www\web\wp-content\plugins\wp-mail-smtp\vendor_prefixed\google\apiclient\src\AuthHandler\Guzzle7AuthHandler.php:23 Stack trace: #0 {main} thrown in E:\www\web\wp-content\plugins\wp-mail-smtp\vendor_prefixed\google\apiclient\src\AuthHandler\Guzzle7AuthHandler.php on line 23