From fecac89a8488eb01d58991e5fc3de5e33a49e33b Mon Sep 17 00:00:00 2001
From: Helmut Merz <helmutm@cy55.de>
Date: Tue, 18 Aug 2020 10:23:15 +0200
Subject: [PATCH] fix breadcrumb check: view may be None because of restricted
 permissions

---
 browser/concept.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/browser/concept.py b/browser/concept.py
index 12babb7..ba3b97f 100644
--- a/browser/concept.py
+++ b/browser/concept.py
@@ -308,7 +308,7 @@ class ConceptView(BaseView):
     def breadcrumbsParent(self):
         for p in self.context.getParents([self.defaultPredicate]):
             view = self.nodeView.getViewForTarget(p)
-            if view.showInBreadcrumbs:
+            if view is not None and view.showInBreadcrumbs:
                 return view
         return None