Klever

I get an exception with the following message trying to create a mark (without tags):

Deleting ReportRoot files took 0.004965543746948242 seconds.
'tags'
Traceback (most recent call last):
File "/work/zakharov/src/klever/bridge/marks/views.py", line 518, in association_changes
data = AssociationChangesTable(request.user, association_id, **view_add_args)
File "/work/zakharov/src/klever/bridge/marks/tables.py", line 876, in init
self.values = self.__get_values()
File "/work/zakharov/src/klever/bridge/marks/tables.py", line 980, in __get_values
.render({'tags': self._data['values'][report_id]['tags'], 'type': mark_type})
KeyError: 'tags'