ERROR: rosrun rqt_tf_tree rqt_tf_tree
I was trying to visualize the tf tree of a running system using:
$ rosrun rqt_tf_tree rqt_tf_tree
but this came up:
PluginHandlerDirect._restore_settings() plugin "rqt_tf_tree/RosTfTree#0" raised an exception:
Traceback (most recent call last):
File "/opt/ros/noetic/lib/python3/dist-packages/qt_gui/plugin_handler_direct.py", line 121, in _restore_settings
self._plugin.restore_settings(plugin_settings_plugin, instance_settings_plugin)
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_tf_tree/tf_tree.py", line 131, in restore_settings
self._refresh_tf_graph()
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_tf_tree/tf_tree.py", line 143, in _refresh_tf_graph
self._update_graph_view(self._generate_dotcode())
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_tf_tree/tf_tree.py", line 150, in _generate_dotcode
return self.dotcode_generator.generate_dotcode(dotcode_factory=self.dotcode_factory,
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_tf_tree/dotcode_tf.py", line 96, in generate_dotcode
data = yaml_parser.load(yaml_data)
TypeError: load() missing 1 required positional argument: 'Loader'
I'm using ROS Noetic in Ubuntu 20.04. I didn't meet this error in previous Ubuntu 18.04 version. Can anyone help me out with this?
There is a prior answer but not with Noetic but pls check just to discard the possibility: https://answers.ros.org/question/2926...
Thanks a lot for your reply. I could still run the command normally last time, but when I reinstall my ubuntu 20.04 with Noetic, I met this error. I think it's because something was missing that I need to install?
I believe you are right about missing something in the new install. It may be with
dotTry
sudo dot -cNot working. I have tried to reinstall ROS but nothing changed.