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Hi @AntarPrantik,

In new ROS distributions the Robot_State_Publisher and Joint_State_publisher are launched differently. I assume the tutorial is for older ROS version.

To launch the RST in Melodic you can do this:

<node name="robot_state_publisher" pkg="robot_state_publisher" type="robot_state_publisher" />

and the JSP:

<node name="joint_state_publisher" pkg="joint_state_publisher" type="joint_state_publisher" />

Furthermore, please note in the JSP documentation that the GUI functionality has been split out of the main joint_state_publisher package into its own package called joint_state_publisher_gui, so instead of launching the standard JST just use the joint_state_publisher_gui. If you do not have it installed you can install the package with:

sudo apt-get install ros-$(rosversion -d)-joint-state-publisher-gui

and launch with

<node name="jsp_gui" pkg="joint_state_publisher_gui" type="joint_state_publisher_gui" />

Finally, those warning messages you posted come from your TIFF files and a visual bug you can check here. Anyways they are non fatal warnings as said in other posts so you should not have any big issue with them.