Traceback (most recent call last):
  File "/usr/share/gnome-activity-journal/src/plugins/blacklist_manager.py", line 87, in _on_row_activated
    self.manager.remove_template(template)
  File "/usr/share/gnome-activity-journal/src/plugins/blacklist_manager.py", line 53, in remove_template
    raise ValueError()
ValueError