So....I'm trying to make the freeform projects (pro) on the rails course, but got stuck at the beginning (no matter which one, it's always the same trouble) , just because the rails server does not start. I type
rails s -p 4001 in the terminal just like the instructions say, but get a message I don't understand, and the app preview does not show anything.
the message in the terminal:
and the preview....
What's wrong? have no idea, any help will be highly appreciated.