The system should be properly configured for you. This exercise comes with a cloud instance based exercise system. Can you please give the cloud URL as soon as you can reproduce the error so that we can have a look?
We are sorry you have got distracted by this false alarm. If you watch the solution video at min 2:06, you will see that this message is also present in our exercise system. I let the product guys explain why this message is on the screen, but I can tell you that you can safely ignore it. All is configured and set up properly.
So just continue with the exercise.
Because of your comment, we are now changing the exercise itself and will put a clear statement for students to ignore this message.
Thanks for your feedback. If you face any other issues or need any support please feel free to reach out to us.