fix: fix xacro command in vehicle.launch (#535)

Signed-off-by: tomoya.kimura <[email protected]>

Signed-off-by: tomoya.kimura <[email protected]>

vehicle_launch/launch/vehicle_description.launch.xml

@@ -9,7 +9,7 @@
   <arg name="model" default="$(find-pkg-share vehicle_launch)/urdf/vehicle.xacro" description="path to the file of model settings (*.xacro)"/>
   <arg name="config_dir" default="$(find-pkg-share individual_params)/config/$(var vehicle_id)/$(var sensor_model)" description="path to the directory of calibration parameters"/>
   <node name="robot_state_publisher" pkg="robot_state_publisher" exec="robot_state_publisher">
-    <param name="robot_description" value="$(command 'xacro $(var model) vehicle_model:=$(var vehicle_model) sensor_model:=$(var sensor_model) config_dir:=$(var config_dir)')"/>
+    <param name="robot_description" value="$(command 'xacro $(var model) vehicle_model:=$(var vehicle_model) sensor_model:=$(var sensor_model) config_dir:=$(var config_dir)' 'warn')"/>
   </node>
 
 </launch>