Fatal error: Uncaught Error: Class 'League\OAuth2\Server\Grant\AbstractGrant' not found in /home/clienti2020/public_html/novaballet.it/vendor/league/oauth2-server/src/Grant/PasswordGrant.php:27 Stack trace: #0 {main} thrown in /home/clienti2020/public_html/novaballet.it/vendor/league/oauth2-server/src/Grant/PasswordGrant.php on line 27