Unable to deploy to Heroku

[zacheryt757]

3.2.1/lib/sprockets/rails/task.rb:62:in block (2 levels) in define' /tmp/build_233da0a6f85ff8aed75b937285962299/vendor/bundle/ruby/2.3.0/gems/rake-12.3.1/exe/rake:27:in <top (required)>'
Tasks: TOP => environment
(See full trace by running task with --trace)
!
! Precompiling assets failed.
!
! Push rejected, failed to compile Ruby app.
! Push failed

[thehashrocket]

you closed this? did you find a fix? i'm having the same issue.