I’m trying to enforce a boundary in a Rails app: only code within the namespace Boundary should be able to access the class Boundary::Blackbox.

I am a newbie and would need some assistance. i added a devise gem and added to my instagram clone app and added “sign up”, sign in”, “sign out”, and “edit profile” links onto my navbar afterwards but my server is indicating a NoMethodError. I have carefully observed the routes from the rails routes and added them to the links but its still not working.

I have a problem with user registration through the admin panel. When the user enters his data, it is transferred to the admin panel, where the administrator views it. If appropriate, it confirms the request and the user is added to the database. But in this case it doesn’t work