Fatal error: Uncaught Error: Class 'Symfony\Component\Templating\Helper\Helper' not found in C:\Landaweb\webs\serverarcos\vendor\symfony\framework-bundle\Templating\Helper\StopwatchHelper.php:26 Stack trace: #0 {main} thrown in C:\Landaweb\webs\serverarcos\vendor\symfony\framework-bundle\Templating\Helper\StopwatchHelper.php on line 26