Hello stuck in this problem
`
> Missing partial products/_nav, application/_nav with {:locale=>[:en],
> :formats=>[:html], :variants=>[], :handlers=>[:erb, :builder, :raw,
> :ruby, :coffee, :haml, :jbuilder]}
`
<%= render "nav" %> path to views/application.html.erb
Gemfile: gem 'rails', '4.2.5' ... gem 'sass-rails', '~> 5.0' ... gem "haml-rails" gem 'bootstrap-sass', '~> 3.3.6'