No module finding named 'ros2_data.ros2_data_s__rosidl_typesupport_c' about ros2_robotsimulation

[MikelBueno]

Hi @UK-Roy,

ModuleNotFoundError: No module named 'ros2_data.ros2_data_s__rosidl_typesupport_c'

This error is related to the ros2_data ROS2 Package, which may not be correctly installed (compiled) in your machine. Could you please re-build it, and try again?

Regards,
Mikel, IFRA-Cranfield

[UK-Roy]

Thanks for the response. I could not find any installation process for ros2_data as well as there is no package in the apt package manager tool. If you provide me the instruction to re-build process, I will be grateful.

Kind regards,
UK Roy

[MikelBueno]

Hi @UK-Roy,
The ros2_data package is part of the ros2_RobotSimulation bundle (you should have it installed already).
I would try to re-install it, by simply doing:

1. Remove the ros2_data folders inside the ~/dev_ws/build and ~/dev_ws/install folders.
2. Colcon build the workspace again.

Regards,
Mikel, IFRA-Cranfield

[UK-Roy]

Hi @mikel, IFRA-Cranfield,
I tried at the above steps you mentioned as well as I also tried to build from scratch. But the issue remains same.

Then I tried to simulate any robot in gazebo, but it is not showing in gazebo but in rviz.
For example I tried to execute this command:

But the result show s like below:

How to overcome this kind of issues.

Regards,
UK-Roy

[MikelBueno]

Hi @UK-Roy,
In the second picture you've shared there's a "No module named rclpy._rclpy" message, which I believe is generated because your ROS2 is not installed properly. rclpy is the ROS2 client library for Python, which should be installed within your ROS2 machine.
Can you execute any other ROS2/Python node (publisher/subscriber, for example)?
I believe you'll need to re-install ROS2.
Regards,
Mikel, IFRA-Cranfield

[UK-Roy]

Hi @MikelBueno,
I have re-installed ROS2 and also tried simple subscriber and publisher in the same workspace where this package is located. Thats simple python files are working. But still ros2_RobotSimulation pkg is facing same issues.
Below simple subscriber and publisher code

and output:

But ros2_RobotSimulation pkg is not working

It is appearing in rViz2 but not at gazebo
Regards,
UK-Roy