How to fix this up? " Unknown action The action 'index' could not be found for UsersController"

Question

When I go to my localhost:3000/users page, I get:
Unknown action
The action 'index' could not be found for UsersController.

Answer 1

If you were following Hartl's tutorial,then accessing localhost:3000/users will cause this error. Try localhost:3000/signup instead.