Correction : mauvais nom de service du HelperManager

src/UnicaenApp/Mvc/Service/ViewXmlRendererFactory.php

@@ -19,7 +19,7 @@ class ViewXmlRendererFactory implements FactoryInterface
 
     public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
     {
-        $xmlRenderer = $container->get('ViewManager')->getRenderer();
+        $xmlRenderer = $container->get('ViewHelperManager')->getRenderer();
 
         return $xmlRenderer;
     }