diff --git a/config/packages/twig.yaml b/config/packages/twig.yaml
index e19beb18..db54b6eb 100644
--- a/config/packages/twig.yaml
+++ b/config/packages/twig.yaml
@@ -3,6 +3,7 @@ twig:
     debug: '%kernel.debug%'
     strict_variables: '%kernel.debug%'
     form_themes: ['bootstrap_4_horizontal_layout.html.twig', 'Form/extendedBootstrap4_layout.html.twig', 'Form/permissionLayout.html.twig' ]
+    exception_controller: ~
 
     globals:
         partdb_title: '%partdb_title%'