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asked 2021-11-22 10:19:51 -0600

ENTMar gravatar image

Hello I have a problem to call the rqt. I followed the guide from e-Manual (Link: and would like to see the topic list from rqt. After I typed


it showed following error messages:

" Traceback (most recent call last): File "/opt/ros/melodic/bin/rqt", line 13, in <module> sys.exit(main.main())

File "/opt/ros/melodic/lib/python2.7/dist-packages/rqt_gui/", line 65, in main hash(os.environ['ROS_PACKAGE_PATH'])))

File "/opt/ros/melodic/lib/python2.7/dist-packages/qt_gui/", line 600, in main

File "/opt/ros/melodic/lib/python2.7/dist-packages/qt_gui/", line 125, in discover self._plugin_menu.add_plugin(plugin_descriptor)

File "/opt/ros/melodic/lib/python2.7/dist-packages/qt_gui/", line 82, in add_plugin self._enrich_action(action, action_attributes, base_path)

File "/opt/ros/melodic/lib/python2.7/dist-packages/qt_gui/", line 133, in _enrich_action action_attributes['icon'], action_attributes.get('icontype', None), base_path)

File "/opt/ros/melodic/lib/python2.7/dist-packages/qt_gui/", line 46, in get_icon raise UserWarning('icon "%s" not found' % str(path))

UserWarning: icon "/opt/ros/melodic/share/rqt_virtual_joy/resource/input-gaming.png" not found"

Can anybody help me to solve this problem?

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1 Answer

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answered 2021-11-22 13:45:35 -0600

To fix this error, need to install the missing package rqt_virtual_joystick:

Suggested installation:

mkdir -p joystick_ws/src
cd joystick_ws/src
git clone
cd ..
echo 'source ~/joystick_ws/devel/setup.bash' >> ~/.bashrc
source ~/.bashrc

To test: rosrun rqt_virtual_joy rqt_virtual_joy Notice that the package is rqt_virtual_joy

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Thank you very much :) It works!

ENTMar gravatar image ENTMar  ( 2021-11-23 08:13:06 -0600 )edit

Glad it works. If you could accept answer by clicking on check mark so the question can be considered closed.

osilva gravatar image osilva  ( 2021-11-23 10:05:45 -0600 )edit

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Asked: 2021-11-22 10:19:51 -0600

Seen: 38 times

Last updated: Nov 22 '21