[Finances: Fix] Fix error on missing Permission

finances/views.py

@@ -953,12 +953,18 @@ def get_context_data(self, **kwargs):
             se.number_participants = se.get_number_participants()
             se.total_weights_registrants = se.get_total_weights_registrants()
             se.total_weights_participants = se.get_total_weights_participants()
-            se.has_perm_manage = (self.request.user == se.manager or
-                                  Permission.objects.get(codename='manage_sharedevent') in self.group.permissions.all())
+            try:
+                se.has_perm_manage = (self.request.user == se.manager or
+                                      Permission.objects.get(codename='manage_sharedevent') in self.group.permissions.all())
+            except ObjectDoesNotExist:
+                se.has_perm_manage = False
         context['shared_events'] = shared_events
         # Permission SelfRegistration
-        if Permission.objects.get(codename='self_register_sharedevent') in self.group.permissions.all():
-            context['has_perm_self_register_sharedevent'] = True
+        try:
+            if Permission.objects.get(codename='self_register_sharedevent') in self.group.permissions.all():
+                context['has_perm_self_register_sharedevent'] = True
+        except ObjectDoesNotExist:
+            pass
 
         return context