I installed ROS2 on MAC and I run talker/listener application and both worked fine, but I found this warning (although it worked fine).
Aniss-MacBook-Pro-3:~ akoubaa$ ros2 run demo_nodes_cpp listener
Failed to load entry point ‘launch’: No module named ‘rclpy._rclpy’
Failed to load entry point ‘echo’: No module named ‘rclpy._rclpy’
Here is a screenshot
Then, I tried the commands
ros2 node list
ros2 topic list
and here there was serious problem as shown in the following two pictures
Is there any means to fix the problem?
ROS Course for Beginners