Unit8 exercise-8.4 - rosbridge address - WebSocket connection failed

On entering rosbridge address, i am getting websocket connection failed…
kindly help in solving this problem.

I apologize for this glitch. I have confirmed that this error is happening. We are looking into it and will get back ASAP.

Thanks for your kind reply.

The problem is that the rosbridge server was not running. Before you can use the rosbridge address, you need to start the rosbridge server as indicated in the first unit. Run on a separate web shell:

roslaunch course_web_dev_ros course.launch

Then try connecting again.

We’ll update the course to make this clearer.