azback5 said about 4 years ago on User Notifications :
No, I'm clicking on the notifications_path  in my app/layout view
  <%= link_to pluralize(Notification.unread_count(@current_user), 'Notification'), notifications_path %>

The error is :

Showing timesink/app/views/layouts/application.html.erb where line #25 raised:

undefined local variable or method `root_path' for #<#<Class:0x00007fb4d1e8b498>:0x00007fb4d91abd38>
Did you mean?  font_path