Rails6 エラー「lib/sprockets/base.rb:100:in `find_all_linked_assets’」が発生した場合の対処法

Sprockets::DoubleLinkError in xxxxx#xxxxx

Multiple files with the same output path cannot be linked ("application.css")
In "C:/rails_sample/app/assets/config/manifest.js" these files were linked:
  - C:/rails_sample/app/assets/stylesheets/application.css
  - C:/rails_sample/app/assets/stylesheets/application.scss

        last_filename = linked_paths[asset.logical_path]
        if last_filename && last_filename != asset.filename
          raise DoubleLinkError.new(
            parent_filename: parent_asset.filename,
            last_filename:   last_filename,
            logical_path:    asset.logical_path,

gem 'sprockets', '~> 3.7.2'

bundle update sprockets