状況

Railsで作られたアプリをEC2にデプロイしました。
ブラウザ上で動作を確認したところ、背景画像の表示ができず困っています。

下記写真のようにローカルでは表示されるのですが
本番環境ですと真っ白な状態です。
Nginxやunicornのログ、またproductionログを確認してもエラーは発生していませんでした。
動作を確認したブラウザ(chrome,brave)の開発者ツールで確認してもエラーは発生していません。

写真上部はrailsのskipperというスライドショー機能を使っています。
下部はシンプルに写真を背景として設定しています。

また、写真はアセットパイプラインによってプリコンパイルされpublic/assetsに格納されています。

関連のありそうなファイルを下記に記します。

/var/www/rails/アプリ名/app/assets/stylesheets/application.scss

SCSS
1#box{
2    height: 600px;
3    margin-top: 200px;
4  }
5  .image1 {
6    background-image:image-url('fot0016-013.jpg');
7  }
8  .image2 {
9    background-image:image-url('hnb0041-049.jpg');
10  }
11  .image3 {
12    background-image:image-url('poo0042-022.jpg');
13  }
14  .image4 {
15    background-image:image-url('yak0059-021.jpg');
16  }
17  .image5 {
18    background-image:image-url('yuu0019-002.jpg');
19  }
20
21  img.sized {
22    width: 50%;
23    height: 50%;
24  }
25
26  .test-bk {
27    background-image:image-url('yuu0019-002.jpg');
28    height: 800px;
29    background-size: cover;
30  }

config/environments/production.rb

Rails.application.configure do
  # Settings specified here will take precedence over those in config/application.rb.

  # Code is not reloaded between requests.
  config.cache_classes = true

  # Eager load code on boot. This eager loads most of Rails and
  # your application in memory, allowing both threaded web servers
  # and those relying on copy on write to perform better.
  # Rake tasks automatically ignore this option for performance.
  config.eager_load = true

  # Full error reports are disabled and caching is turned on.
  config.consider_all_requests_local = false
  config.action_controller.perform_caching = true

  # Ensures that a master key has been made available in either ENV["RAILS_MASTER_KEY"]
  # or in config/master.key. This key is used to decrypt credentials (and other encrypted files).
  # config.require_master_key = true

  # Disable serving static files from the `/public` folder by default since
  # Apache or NGINX already handles this.
  # config.public_file_server.enabled = ENV["RAILS_SERVE_STATIC_FILES"].present?
  config.public_file_server.enabled = true

  # Compress JavaScripts and CSS.
  config.assets.js_compressor = :uglifier
  # config.assets.css_compressor = :sass

  # Do not fallback to assets pipeline if a precompiled asset is missed.
  config.assets.compile = true

  # `config.assets.precompile` and `config.assets.version` have moved to config/initializers/assets.rb

  # Enable serving of images, stylesheets, and JavaScripts from an asset server.
  # config.action_controller.asset_host = 'http://assets.example.com'

  # Specifies the header that your server uses for sending files.
  # config.action_dispatch.x_sendfile_header = 'X-Sendfile' # for Apache
  # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX

  # Store uploaded files on the local file system (see config/storage.yml for options)
  config.active_storage.service = :local

  # Mount Action Cable outside main process or domain
  # config.action_cable.mount_path = nil
  # config.action_cable.url = 'wss://example.com/cable'
  # config.action_cable.allowed_request_origins = [ 'http://example.com', /http://example.*/ ]

  # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
  config.force_ssl = false

  # Use the lowest log level to ensure availability of diagnostic information
  # when problems arise.
  config.log_level = :debug

  # Prepend all log lines with the following tags.
  config.log_tags = [:request_id]

  # Use a different cache store in production.
  # config.cache_store = :mem_cache_store

  # Use a real queuing backend for Active Job (and separate queues per environment)
  # config.active_job.queue_adapter     = :resque
  # config.active_job.queue_name_prefix = "insta_#{Rails.env}"

  config.action_mailer.perform_caching = false

  config.require_master_key = true

  # Ignore bad email addresses and do not raise email delivery errors.
  # Set this to true and configure the email server for immediate delivery to raise delivery errors.
  # config.action_mailer.raise_delivery_errors = false

  # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
  # the I18n.default_locale when a translation cannot be found).
  config.i18n.fallbacks = true

  # Send deprecation notices to registered listeners.
  config.active_support.deprecation = :notify

  # Use default logging formatter so that PID and timestamp are not suppressed.
  config.log_formatter = ::Logger::Formatter.new

  # Use a different logger for distributed setups.
  # require 'syslog/logger'
  # config.logger = ActiveSupport::TaggedLogging.new(Syslog::Logger.new 'app-name')

  if ENV["RAILS_LOG_TO_STDOUT"].present?
    logger = ActiveSupport::Logger.new(STDOUT)
    logger.formatter = config.log_formatter
    config.logger = ActiveSupport::TaggedLogging.new(logger)
  end

  # Do not dump schema after migrations.
  config.active_record.dump_schema_after_migration = false
end

解決方法をご教授頂きましたら幸いです。