Fatal error: Uncaught Error: Class 'Symfony\Component\Form\AbstractRendererEngine' not found in /var/www/html/simplesamlphp/vendor/symfony/twig-bridge/Form/TwigRendererEngine.php:22
Stack trace:
#0 {main}
  thrown in /var/www/html/simplesamlphp/vendor/symfony/twig-bridge/Form/TwigRendererEngine.php on line 22