Spree/frontend file not find

[Leo22Prieto]

I've juste follow the readme (add the gem, bundle install and bin/rails generate solidus_product_assembly:install). And when I run the server, I have an error.

Sprockets::FileNotFound in Home#index
Showing /Users/leoprieto/code/myapp/app/views/layouts/storefront.html.erb where line #11 raised:

couldn't find file 'spree/frontend' with type 'application/javascript'

Extracted source (around line #11):
<%= javascript_include_tag 'solidus_starter_frontend' %>