If I click the "Run" button on a new skill immediately after another one completes, the SkiROS2 GUI dies. The error: ``` [rqt_gui-3] Traceback (most recent call last): [rqt_gui-3] File "/delib_ws/build/skiros2_gui/skiros2_gui/core/skiros_widget.py", line 1336, in on_skill_exe_button_clicked [rqt_gui-3] if self._sli.agent.execute(execution_id=self._sli.agent.task): [rqt_gui-3] ^^^^^^^^^^^^^^^ [rqt_gui-3] File "/delib_ws/build/skiros2_skill/skiros2_skill/ros/skill_layer_interface.py", line 31, in agent [rqt_gui-3] return next(iter(self._agents.values())) [rqt_gui-3] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [rqt_gui-3] StopIteration ```