rakeアセットを実行するとエラーが発生します：プリコンパイル？

Question

ubuntuサーバー上にドキュメントを一切なく、Ruby（またはRuby on Rails）の経験が豊富でなく、Rubyのレールアプリケーションを配備しなくてはいけない状況に陥っています。

私は様々なフォーラム/チュートリアルに記載されている手順に従いました。ポート80でWEBricksサーバーを起動しましたが、ブラウザからWebアプリケーションにアクセスしようとすると、ブラウザではなく次のようになります。

couldn't find file './compiled/admin' under '/home/ubuntu/www/my-app/app/assets/stylesheets' with type 'text/css' 

はその後、誰かが

DEPRECATION WARNING: Currently, Active Record suppresses errors raised within `after_rollback`/`after_commit` callbacks and only print them to the logs. In the next version, these errors will no longer be suppressed. Instead, the errors will propagate normally just like in other Active Record callbacks. 

You can opt into the new behavior and remove this warning by setting: 

    config.active_record.raise_in_transactional_callbacks = true 

(called from <class:User> at /home/ubuntu/www/my-app/app/models/user.rb:27) 
rake aborted! 
Sprockets::FileNotFound: couldn't find file './compiled/admin' under '/home/ubuntu/www/my-app/app/assets/stylesheets' with type 'text/css' 
/home/ubuntu/www/my-app/app/assets/stylesheets/admin.css:10 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/resolve.rb:64:in `resolve!' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/directive_processor.rb:399:in `resolve' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/directive_processor.rb:207:in `process_require_directive' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/directive_processor.rb:180:in `block in process_directives' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/directive_processor.rb:178:in `each' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/directive_processor.rb:178:in `process_directives' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/directive_processor.rb:83:in `_call' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/directive_processor.rb:68:in `call' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:75:in `call_processor' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:57:in `block in call_processors' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:56:in `reverse_each' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:56:in `call_processors' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:86:in `load_asset_by_uri' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:45:in `block in load' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:155:in `fetch_asset_from_dependency_cache' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:38:in `load' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/cached_environment.rb:20:in `block in initialize' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/cached_environment.rb:47:in `load' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/bundle.rb:23:in `block in call' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/utils.rb:183:in `dfs' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/bundle.rb:24:in `call' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:75:in `call_processor' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:57:in `block in call_processors' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:56:in `reverse_each' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:56:in `call_processors' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:86:in `load_asset_by_uri' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:45:in `block in load' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:155:in `fetch_asset_from_dependency_cache' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:38:in `load' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/cached_environment.rb:20:in `block in initialize' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/cached_environment.rb:47:in `load' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/base.rb:63:in `find_asset' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/base.rb:70:in `find_all_linked_assets' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/manifest.rb:130:in `block in find' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/manifest.rb:129:in `each' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/manifest.rb:129:in `find' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/sprockets/manifest.rb:162:in `compile' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-rails-2.3.2/lib/sprockets/rails/task.rb:70:in `block (3 levels) in define' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-3.2.0/lib/rake/sprocketstask.rb:147:in `with_logger' 
/home/ubuntu/.rvm/gems/ruby-2.3.0/gems/sprockets-rails-2.3.2/lib/sprockets/rails/task.rb:69:in `block (2 levels) in define' 
Tasks: TOP => assets:precompile 
(See full trace by running task with --trace) 

...私は、このコマンドを実行すると、私は次のエラーを取得する私は
rake assets:precompile
を実行することが示唆されたすべてのヘルプははるかに高く評価されます。私が他の情報を提供したいのであれば、尋ねてください。

次はGemfileは、次のようになります

/* 
* Admin stylesheets 
* 
*= require select2 
*= require select2-bootstrap 
*= require_tree ./plugins 
*= require_tree ./fonts 
* 
* Pull compiled from /app/assets/stylesheets/compiled 
*= require ./compiled/admin 
* 
*/ 

アプリ/資産/スタイルシート/ admin.cssファイルです。 appフォルダ内のファイルの

source 'https://rubygems.org' 

gem 'rails', '4.2.0' 
gem 'sass-rails', '~> 5.0.3' 
gem 'less-rails', '~> 2.7.0' 
gem 'therubyracer' 
gem 'uglifier', '>= 1.3.0' 
gem 'coffee-rails', '~> 4.1.0' 
gem 'jquery-rails' 
gem 'sqlite3', group: :development 
gem 'pg' 

#bootstrap components 
gem 'bootstrap-datepicker-rails' 
gem "select2-rails" 

#images upload 
gem "paperclip", "~> 4.2" 
gem 'aws-sdk', '~> 1.6' 

group :development do 
    gem 'capistrano', '~> 2' 
    gem 'spring' 
    gem 'better_errors' 
    gem 'binding_of_caller' 
    gem 'pry' 
    gem 'pry-rails' 
    gem 'awesome_print' # https://github.com/michaeldv/awesome_print 
end 

gem 'rails_12factor', group: [:production, :staging] 

#user managment 
gem 'devise' 
gem 'cancancan', '~> 1.10' 
gem 'recaptcha', require: 'recaptcha/rails' 
#tracking user data 
gem 'classy_enum' 

#pagination 
gem 'kaminari' 

#api serialization 
gem 'active_model_serializers' 
# To use Jbuilder templates for JSON 
gem 'jbuilder' 

#dropbox 
gem "dropbox-api" 

#sidekiq jobs 
gem 'sidekiq' 
gem 'sidekiq-status' 
gem 'sinatra', :require => nil 

#for the folders hierarchy tree 
gem 'closure_tree' 

# PDFs 
gem 'doc_raptor' 

# Excel Parsing 
gem 'roo' 

# Emails 
gem 'sendgrid' 

# auto increment numbers 
gem 'protokoll' 

# State machine 
gem 'aasm' 

#elastic search 
gem 'elasticsearch-model', git: 'git://github.com/elasticsearch/elasticsearch-rails.git' 
gem 'elasticsearch-rails', git: 'git://github.com/elasticsearch/elasticsearch-rails.git' 

gem 'rubyzip' 

gem 'exception_notification', group: [:production, :staging], github: 'joshco/exception_notification' 

gem 'spreadsheet' 

リスト

drwxrwxr-x 11 ubuntu ubuntu 4096 Apr 1 08:03 app 
drwxrwxr-x 2 ubuntu ubuntu 4096 Apr 1 08:03 bin 
drwxrwxr-x 3 ubuntu ubuntu 4096 Apr 1 08:03 client 
drwxrwxr-x 5 ubuntu ubuntu 4096 Apr 5 22:08 config 
-rw-rw-r-- 1 ubuntu ubuntu 153 Apr 1 08:03 config.ru 
drwxrwxr-x 4 ubuntu ubuntu 4096 Apr 1 08:03 db 
-rw-rw-r-- 1 ubuntu ubuntu 1570 Apr 1 08:03 Gemfile 
-rw-rw-r-- 1 ubuntu ubuntu 9072 Apr 1 08:03 Gemfile.lock 
drwxrwxr-x 5 ubuntu ubuntu 4096 Apr 1 08:03 gulp 
-rw-rw-r-- 1 ubuntu ubuntu 557 Apr 1 08:03 gulpfile.js 
drwxrwxr-x 6 ubuntu ubuntu 4096 Apr 1 08:03 lib 
drwxrwxr-x 2 ubuntu ubuntu 4096 Apr 6 13:48 log 
-rw-rw-r-- 1 ubuntu ubuntu 1393 Apr 1 08:03 package.json 
-rw-rw-r-- 1 ubuntu ubuntu 146 Apr 1 08:03 Procfile 
-rw-rw-r-- 1 ubuntu ubuntu 143 Apr 1 08:03 Procfile.example 
drwxrwxr-x 2 ubuntu ubuntu 4096 Apr 1 08:03 public 
-rw-rw-r-- 1 ubuntu ubuntu 249 Apr 1 08:03 Rakefile 
-rw-rw-r-- 1 ubuntu ubuntu 7908 Apr 1 08:03 README.md 
drwxrwxr-x 8 ubuntu ubuntu 4096 Apr 1 08:03 test 
drwxrwxr-x 6 ubuntu ubuntu 4096 Apr 5 15:14 tmp 
drwxrwxr-x 3 ubuntu ubuntu 4096 Apr 1 08:03 vendor 
-rw-rw-r-- 1 ubuntu ubuntu 64 Apr 1 08:03 webpack.config.js 

Answer 1

あなたの問題は、あなたがこのstylesheets/compiledフォルダに移動しますファイルを生成する必要があるということです。

つのオプション：

1. がそれらを生成する方法を見つけるあなたは亭に関するファイルがある場合（など、プロジェクトのルートにイサキをチェックそうした場合、私はあなたが起動する必要があるだろうこれらのファイルを実際に生成する）、アセットのコンパイルの前に対応するデプロイメントルールを追加するか、結果をコミットします。

2. あなたadmin.cssファイルからこの行を削除します。

   *= require ./compiled/admin