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ruby-on-railsherokuassetssprocketsprecompile

Error: Sprockets::FileNotFound: couldn't find file 'application.scss' for Heroku

I'm having some issues with Sprockets not finding a file during rake assets:precompile. I haven't had this issue before, but when I added a generated migration (which built locally), Heroku failed to build my app, and I don't know why, because it builds locally (without me running an additional rake assets:precompile).

Error message is this:

-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       rake aborted!
       Sprockets::FileNotFound: could not find file: /tmp/build_dd4a799769e6963b7b292df72db58fd8/username-appname-uniqueid/app/assets/stylesheets/application.scss

Any help with why this is? Thank you for your time!

PS. As a side note - when I run "rake assets:precompile" and then push to Heroku, the app builds. However, an item with the css class "fa-bars" gets messed up... why is this?

Thanks!

Solution

  • I add the same issue with Sprockets 3.3.3 and our Rails 4.2.3 app.

    I fixed it by cleaning our dyno build cache with:

    heroku repo:purge_cache

    Please note that your next deployment will take longer as bundler cache will be cleared too.