```ruby
class Mentor::BaseController < ApplicationController
  before_action :authenticate_user!
  before_action -> { require_role 'mentor' }
  # before_action :set_breadcrumbs

  # def set_breadcrumbs
  #   @breadcrumbs = [ ['Rating', :rating] ]
  # end
end
```

Remove commented out code from mentor base controller
user
```ruby
class Mentor::BaseController < ApplicationController
  before_action :authenticate_user!
  before_action -> { require_role 'mentor' }
end
```
assistant