huyingying@huyingying-Inspiron-7472:~/catkin_workspace$ roslaunch kortex_driver kortex_driver.launch
... logging to /home/huyingying/.ros/log/d38bd272-a919-11ec-8d3e-dca2664bc7bd/roslaunch-huyingying-Inspiron-7472-3180.log
Checking log directory for disk usage. This may take a while.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.
xacro: in-order processing became default in ROS Melodic. You can drop the option.
resource not found: robotiq_2f_85_gripper_visualization
ROS path [0]=/opt/ros/melodic/share/ros
ROS path [1]=/home/huyingying/catkin_workspace/src
ROS path [2]=/opt/ros/melodic/share
when instantiating macro: load_gripper (/home/huyingying/catkin_workspace/src/ros_kortex/kortex_description/grippers/robotiq_2f_85/urdf/robotiq_2f_85_macro.xacro)
instantiated from: load_robot (/home/huyingying/catkin_workspace/src/ros_kortex/kortex_description/robots/kortex_robot.xacro)
in file: /home/huyingying/catkin_workspace/src/ros_kortex/kortex_description/grippers/robotiq_2f_85/urdf/robotiq_arg2f_85_model_macro.xacro
included from: /home/huyingying/catkin_workspace/src/ros_kortex/kortex_description/robots/gen3_robotiq_2f_85.xacro
RLException: Invalid <param> tag: Cannot load command parameter [robot_description]: command [['/opt/ros/melodic/lib/xacro/xacro', '--inorder', '/home/huyingying/catkin_workspace/src/ros_kortex/kortex_description/robots/gen3_robotiq_2f_85.xacro', 'dof:=7', 'vision:=true', 'sim:=false']] returned with code [2].
Param xml is <param command="$(find xacro)/xacro --inorder $(find kortex_description)/robots/$(arg arm)_$(arg gripper).xacro dof:=$(arg dof) vision:=$(arg vision) sim:=false" name="robot_description" unless="$(eval not arg('gripper'))"/>
The traceback for the exception was written to the log file
这个该怎么解决？
