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Turns out, the issue is due to the typo logerror should be logerr

But more importantly, the reason more helpful error messages (e.g. AttributeError when using logerror) aren't appearing is becauserospy.init_node isn't started in its own thread. The following should be used instead

threading.Thread(target=lambda: rospy.init_node('example_node', disable_signals=True)).start()

as mentioned here

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