Link not working

I am doing ‘Docker for Absolute Beginner’. In the module 4 lab of ‘Environment variable’ there is a question, " View the application by clicking the link HOST:38282 above your terminal and ensure it has the right color", which is not working. Upon clicking the link, I am getting an error which says, “Bad Gateway”.

Did you complete step 2 correctly?
I’ve just done the lab and it is working for me:

$ docker ps
CONTAINER ID   IMAGE                     COMMAND           CREATED         STATUS         PORTS                     NAMES
47a625e9bc6e   kodekloud/simple-webapp   "python"   3 minutes ago   Up 3 minutes>8080/tcp   blue-app

Thanks for your help. I completed the step-2 again, now the link HOST:38282 is working.