CODEWITHSUNDEEP
cros
seongjun
seongjun

Reputation: 21

How do I deal with the RLException error that occurred during roslaunch?

roslaunch throws RLException

Hello, I am trying to follow this tutorial:

I followed all instruction in the tutorial, including installing the requested packages, until section 2.5

Then, when I type the following oncommandomand line,

roslaunch testbot_description testbot.launch

I get the following error:

RLException: [testbot.launch] is neither a launch file in package [testbot_description] nor is [testbot_description] a launch file name The traceback for the exception was written to the log file

I have no clue what is going on here. Could anyone help me in fixing it?

<launch>
    <arg name="model" default="$(find testbot_description)/urdf/testbot.urdf" />
    <arg name="gui" default="True" />
    <param name="robot_description" textfile="$(arg model)" />
    <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" />
</launch>

RLException: [testbot.launch] is neither a launch file in package [testbot_description] nor is [testbot_description] a launch file name The traceback for the exception was written to the log file

Upvotes: 1

Views: 22100

Answers (2)

Loony_D
Loony_D

Reputation: 41

Check if roscore is running by checking if the following command returns '/rosout'

rostopic list

If it returns the message

ERROR: Unable to communicate with master!

run

roscore

Upvotes: 0

questionto42
questionto42

Reputation: 9512

This happens when you have not sourced the already sourced (source /opt/ros/MY_ROS_VERSION/setup.bash) and compiled (catkin_make) ROS. In your ROS project folder, run

source devel/setup.bash

before you roslaunch testbot_description testbot.launch . See also roslaunch: [ ] is neither a launch file in package [ ] nor is [ ] a launch file name.

Upvotes: 1

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