[rviz-3] process has died

edit

Hello

sorry for my bad english

I used solidwork to create my robotmodel and exporter it to urdf

but when i launch display.launch

then add robotmodel

it will has a error

[rviz-3] process has died [pid 9048, exit code -7, cmd /opt/ros/kinetic/lib/rviz/rviz -d /home/pi/catkin_ws/src/project3/urdf.rviz __name:=rviz __log:=/home/pi/.ros/log/bf814e84-ef61-11e9-8dbb-b827eb7385f0/rviz-3.log].
log file: /home/pi/.ros/log/bf814e84-ef61-11e9-8dbb-b827eb7385f0/rviz-3*.log

display.launch

<launch>
  <arg
    name="model" />
  <arg
    name="gui"
    default="true" />
  <param
    name="robot_description"
    textfile="$(find project3)/urdf/project3.urdf" />
  <param
    name="use_gui"
    value="$(arg gui)" />
  <node
    name="joint_state_publisher"
    pkg="joint_state_publisher"
    type="joint_state_publisher" />
  <node
    name="robot_state_publisher"
    pkg="robot_state_publisher"
    type="state_publisher" />
  <node
    name="rviz"
    pkg="rviz"
    type="rviz"
    args="-d $(find project3)/urdf.rviz" />
</launch>

it's my new error

[ WARN] [1571311955.119769841]: The root link base_link has an inertia specified in the URDF, but KDL does not support a root link with an inertia.  As a workaround, you can add an extra dummy link to your URDF.
libEGL warning: DRI2: failed to authenticate
[ INFO] [1571311957.240473668]: rviz version 1.12.17
[ INFO] [1571311957.240868508]: compiled against Qt version 5.5.1
[ INFO] [1571311957.240994185]: compiled against OGRE version 1.9.0 (Ghadamon)
libEGL warning: DRI2: failed to authenticate
[ INFO] [1571311958.669318716]: Stereo is NOT SUPPORTED
[ INFO] [1571311958.670846882]: OpenGl version: 3 (GLSL 1.3).
[rviz-3] process has died [pid 6848, exit code -7, cmd /opt/ros/kinetic/lib/rviz/rviz __name:=rviz __log:=/home/pi/.ros/log/56917078-f0d0-11e9-b686-b827eb7385f0/rviz-3.log].
log file: /home/pi/.ros/log/56917078-f0d0-11e9-b686-b827eb7385f0/rviz-3*.log

and following is my new code

<launch>
  <arg
    name="model" />
  <arg
    name="gui"
    default="true" />
  <param
    name="robot_description"
    textfile="$(find project3)/urdf/project3.urdf" />
  <param
    name="use_gui"
    value="$(arg gui)" />
  <node
    name="joint_state_publisher"
    pkg="joint_state_publisher"
    type="joint_state_publisher"
    output="screen" />
  <node
    name="robot_state_publisher"
    pkg="robot_state_publisher"
    type="robot_state_publisher"
    output="screen" />
  <node
    name="rviz"
    pkg="rviz"
    type="rviz"
    output="screen"/>
</launch>

Thank you for your help