我收到了这个错误：
ActionView::Template::Error (Asset `application.css` was not declared to be precompiled in production.
Declare links to your assets in `app/assets/config/manifest.js`.
//= link application.css
and restart your server):
导轨 5.1.4
链轮（4.0.0.beta5、4.0.0.beta4、3.7.1）
链轮导轨（3.2.1、3.2.0、2.3.3）
清单.js
//= link_tree ../images
//= link_directory ../javascripts .js
//= link_directory ../stylesheets .css
资产.rb
# Be sure to restart your server when you modify this file.
# Version of your assets, change this if you want to expire all your assets.
Rails.application.config.assets.version = '1.0'
# Add additional assets to the asset load path.
# Rails.application.config.assets.paths << Emoji.images_path
# Add Yarn node_modules folder to the asset load path.
Rails.application.config.assets.paths << Rails.root.join('node_modules')
# Precompile additional assets.
# application.js, application.css, and all non-JS/CSS in the app/assets
# folder are already added.
# Rails.application.config.assets.precompile += %w( admin.js admin.css )
应用程序.rb
require_relative 'boot'
require "rails"
# Pick the frameworks you want:
require "active_model/railtie"
require "active_job/railtie"
# require "active_record/railtie"
require "action_controller/railtie"
require "action_mailer/railtie"
require "action_view/railtie"
require "action_cable/engine"
require "sprockets/railtie"
require "rails/test_unit/railtie"