Unable to restart the application. After clicking on the "reload", a message with the text "Sorry, there was a problem. You many need to check your DNS setup. Or, if you're using a virtualenv, you should check whether its Python version matches the one you've specified here. If it keeps happening, please send us feedback.".
What did I do wrong?
Just at the entrance to my web application server sends the error "Error code: 502-loadbalancer"