I got a problem with devise. Every time I try to call an Url that should be handled by devise (e.g. http://localhost:3000/users/sign_up) I end up with the following error:
The error for me was fixed when I changed my link_to methods.
link_to
In my header I had:
<%= link_to "Info", :controller => :info %>
and when I switched it to:
<%= link_to "Info", "/info" %>
the error was gone!