Fatal error: Uncaught Error: Class "League\OAuth2\Client\Provider\AbstractProvider" not found in /var/www/usonboard.com/vendor/league/oauth2-client/src/Provider/GenericProvider.php:27
Stack trace:
#0 {main}
thrown in /var/www/usonboard.com/vendor/league/oauth2-client/src/Provider/GenericProvider.php on line 27