Turned lables off in tf in rqt rivz and started getting this error. [closed]

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I turned of labels in rviz running under rqt and got this error . Any idea what this is?

  File "/opt/ros/hydro/lib/python2.7/dist-packages/rqt_runtime_monitor/runtime_monitor_widget.py", line 320, in _on_timer
    self._update_root_labels()
  File "/opt/ros/hydro/lib/python2.7/dist-packages/rqt_runtime_monitor/runtime_monitor_widget.py", line 336, in _update_root_labels
    self._stale_node.setText(0, "Stale (%s)" % (self._stale_node.childCount()))
RuntimeError: wrapped C/C++ object of type QTreeWidgetItem has been deleted