Fatal error: Uncaught Error: Class 'SimpleSAML\Module\core\Auth\Source\AbstractSourceSelector' not found in /var/www/html/simplesamlphp/modules/core/src/Auth/Source/RequestedAuthnContextSelector.php:22
Stack trace:
#0 {main}
  thrown in /var/www/html/simplesamlphp/modules/core/src/Auth/Source/RequestedAuthnContextSelector.php on line 22