Unable to load instance for Course Introduction to App Engine Studio for Citizen Developers

[sgree62]

I am working on the Course Introduction to App Engine Studio for Citizen Developers .  I am trying to open my instance to complete the lab work, Each time I open it page says "502 Bad Gateway" 

What does this mean and how can I fix this issue?

[sgree62]

Do I have to terminate my instance from a different course lesson I've completed before I can open and instance in the App Engine Course lesson?

[Simon Hendery]

Hi @sgree62 

Generally you can have up to two training instances operating at any one time. And if you try to open a third, the system will give you a specific error message about the limit, rather than a generic 502 error. So I suspect that's not the problem here.

Try clearing the cache, logging out and in again. If That doesn't work, best to open a case via Help in Now Learning.