failed to lunch this command
when i try this command : roslaunch panda_moveit_config demo.launch rviz_tutorial:=true
i get this error :
No such file or directory: /opt/ros/noetic/share/franka_description/robots/panda_arm_hand.urdf.xacro [Errno 2] No such file or directory: '/opt/ros/noetic/share/franka_description/robots/panda_arm_hand.urdf.xacro'
RLException: while processing /home/chizu/ws_moveit/src/panda_moveit_config/launch/planning_context.launch:
Invalid <param> tag: Cannot load command parameter [robot_description]: command [['/opt/ros/noetic/lib/xacro/xacro', '/opt/ros/noetic/share/franka_description/robots/panda_arm_hand.urdf.xacro']] returned with code [2].
Param xml is <param if="$(eval arg('load_robot_description') and arg('load_gripper'))" name="$(arg robot_description)" command="$(find xacro)/xacro '$(find franka_description)/robots/panda_arm_hand.urdf.xacro'"/>
The traceback for the exception was written to the log file