Add missing error block.

CHANGELOG.md

@@ -12,7 +12,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
- - Fix broken api routes in Contao 4.6/Symfony 4 (#69).
+ - Fix broken api routes in Contao 4.6/Symfony 4 (#69)
+ - Fix broken about.html.twig template. Error block was missing
 
 ## 3.1.2 - 2018-12-18
 

src/Bundle/Resources/views/backend/about.html.twig

@@ -2,6 +2,8 @@
 
 {% block headline %}{{ "MOD.leaflet_about.1"|trans({}, 'contao_modules') }}{% endblock %}
 
+{% block error %}{% endblock %}
+
 {% block main %}
     <div class="netzmacht-leaflet-credits">
         <div class="header">