Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\HttpKernelBrowser' not found in /var/www/html/simplesamlphp/vendor/symfony/framework-bundle/KernelBrowser.php:31
Stack trace:
#0 {main}
  thrown in /var/www/html/simplesamlphp/vendor/symfony/framework-bundle/KernelBrowser.php on line 31