Fixed attribute error if anonymous opens application/assignment view.

openslides/application/models.py

@@ -164,7 +164,10 @@ class Application(models.Model, SlideMixin):
             yield object.person
 
     def is_supporter(self, person):
+        try:
             return self.applicationsupporter_set.filter(person=person).exists()
+        except AttributeError:
+            return False
 
     @property
     def enough_supporters(self):

openslides/assignment/models.py

@@ -122,8 +122,11 @@ class Assignment(models.Model, SlideMixin):
         """
         return True, if person is a candidate.
         """
+        try:
             return self.assignment_candidats.filter(person=person) \
                    .exclude(blocked=True).exists()
+        except AttributeError:
+            return False
 
     def is_blocked(self, person):
         """