When I try running "rosrun rqtgui rqtgui" in my terminal, I got a error :

rosrun rqt_gui rqt_gui

Traceback (most recent call last): File "/opt/ros/melodic/lib/rqtgui/rqtgui", line 13, in sys.exit(main.main()) File "/opt/ros/melodic/lib/python2.7/dist-packages/rqtgui/main.py", line 65, in main hash(os.environ['ROSPACKAGEPATH']))) File "/opt/ros/melodic/lib/python2.7/dist-packages/qtgui/main.py", line 600, in main pluginmanager.discover() File "/opt/ros/melodic/lib/python2.7/dist-packages/qtgui/pluginmanager.py", line 125, in discover self.pluginmenu.addplugin(plugindescriptor) File "/opt/ros/melodic/lib/python2.7/dist-packages/qtgui/pluginmenu.py", line 82, in addplugin self.enrichaction(action, actionattributes, basepath) File "/opt/ros/melodic/lib/python2.7/dist-packages/qtgui/pluginmenu.py", line 133, in enrichaction actionattributes['icon'], actionattributes.get('icontype', None), basepath) File "/opt/ros/melodic/lib/python2.7/dist-packages/qtgui/iconloader.py", line 46, in geticon raise UserWarning('icon "%s" not found' % str(path))

sudo apt-get install ros-melodic-rqt

Latest vesion already installed

env | grep ROS

• ROSETCDIR=/opt/ros/melodic/etc/ros ROSROOT=/opt/ros/melodic/share/ros ROSMASTERURI=http://localhost:11311 ROSVERSION=1 ROSPYTHONVERSION=2 ROSPACKAGEPATH=/home/hrithik/mahiws/install/mahi/share:/opt/ros/melodic/share ROSLISPPACKAGEDIRECTORIES= ROSDISTRO=melodic

Please Help me!!!