Fatal error: Uncaught Error: Interface "PHPMailer\PHPMailer\OAuthTokenProvider" not found in C:\Apache24\htdocs\AhmB2B_V2\php\mail\phpMailer\OAuth.php:36 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\AhmB2B_V2\php\mail\phpMailer\OAuth.php on line 36