I have rails 4.2 working fine on development but in production env I have the following warning:
DEPRECATION WARNING: The configuration option `con
Open your environments file. (either environments/production.rb, environments/development.rb, environments/test.rb) depending on which environment you are in.
environments/production.rb
environments/development.rb
environments/test.rb
Change
config.serve_static_assets
to
config.serve_static_files