Notice: Undefined variable: exception in C:\Apache24\htdocs\zz_drupal\vendor\symfony\error-handler\Resources\views\exception.html.php on line 5

Fatal error: Call to a member function getAllPrevious() on a non-object in C:\Apache24\htdocs\zz_drupal\vendor\symfony\error-handler\Resources\views\exception.html.php on line 5