Fatal error: Uncaught Error: Class 'Drupal\simple_oauth\Plugin\Oauth2GrantBase' not found in /var/www/html/tmp/contrib/simple_oauth/src/Plugin/Oauth2Grant/RefreshToken.php:19 Stack trace: #0 {main} thrown in /var/www/html/tmp/contrib/simple_oauth/src/Plugin/Oauth2Grant/RefreshToken.php on line 19