Fatal error: Uncaught Error: Class "League\OAuth2\Client\Grant\AbstractGrant" not found in /home/fortebku/smtp-mail/vendor/microsoft/kiota-authentication-phpleague/src/Oauth/OnBehalfOfGrant.php:24 Stack trace: #0 {main} thrown in /home/fortebku/smtp-mail/vendor/microsoft/kiota-authentication-phpleague/src/Oauth/OnBehalfOfGrant.php on line 24