<launch>
<param name="robot_description" textfile="$(find GazoboTest)/urdf/test01.urdf"/>
<include file="$(find gazebo_ros)/launch/empty_world.launch"/>
<node pkg="rviz" type="rviz" name="rviz"/>
<node pkg="gazebo_ros" type="spawn_model" name="spawn" args="-urdf -model car -param robot_description"/>
</launch>
```xml
<?xml version="1.0" encoding="utf-8"?>
<!-- =================================================================================== -->
<!-- | This document was autogenerated by xacro from urdf_test05.urdf | -->
<!-- | EDITING THIS FILE BY HAND IS NOT RECOMMENDED | -->
<!-- =================================================================================== -->
<robot name="my_robot">
<link name="car">
<visual>
<geometry>
<cylinder length="1" radius="1"/>
</geometry>
<origin xyz="0.0 0.0 0.0" rpy="0.0 0.0 0.0"/>
<collision>
<geometry>
<box size="2 3 1"/>
</geometry>
<origin xyz="0.0 0.0 0.0" rpy="0.0 0.0 0.0"/>
</collision>
<inertial>
<mass value="2"/>
<inertia ixx=“0" ixy="0" ixz="0" iyy="1" iyz="0" izz="1"/>
</inertial>
</visual>
</link>
<gazebo reference="car">
<material>Gazebo/Red</material>
</gazebo>
</robot>
```
根据你提供的URDF文件和launch文件,我看到几个可能的问题: