Get error when launch gazebo_ros empty_world.launch

edit

when I try to launch gazebo_ros empty_world.launch, the code is here:

  <include file="$(find gazebo_ros)/launch/empty_world.launch">
    <arg name="debug" value="$(arg debug)" />
    <arg name="gui" value="$(arg gui)" />
    <arg name="paused" value="$(arg paused)"/>
    <arg name="use_sim_time" value="$(arg use_sim_time)"/>
    <arg name="headless" value="$(arg headless)"/>
  </include>

I always get the error, i want to how to solve, thanks.

[gazebo-1] process has died [pid 18905, exit code 255, cmd /opt/ros/kinetic/lib/gazebo_ros/gzserver -e ode worlds/empty.world __name:=gazebo __
log:=/home/robot/.ros/log/7719b5f8-4c52-11e9-a3d6-8cec4b9a7b95/gazebo-1.log].
log file: /home/robot/.ros/log/7719b5f8-4c52-11e9-a3d6-8cec4b9a7b95/gazebo-1*.log