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