Fatal error: Uncaught Error: Interface 'Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerInterface' not found in /var/www/html/simplesamlphp/vendor/symfony/framework-bundle/CacheWarmer/ConfigBuilderCacheWarmer.php:33
Stack trace:
#0 {main}
  thrown in /var/www/html/simplesamlphp/vendor/symfony/framework-bundle/CacheWarmer/ConfigBuilderCacheWarmer.php on line 33