嘿，我在将我的rails项目推送到heroku时遇到了一些麻烦，我收到了以下错误：
remote: Running: rake assets:precompile
remote: I, [2015-07-24T19:05:36.903629 #973] INFO -- : Writing /tmp/build_9e450c140b29b08f655c356ad7f8fe81/public/assets/application-3dba84f3550d057a7ebd21940bb94ece39b0ea686486aaaf4c32bb2fda950496.js
remote: rake aborted!
remote: NoMethodError: undefined method `[]' for nil:NilClass
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/sass_processor.rb:266:in `sprockets_context'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/sass_processor.rb:112:in `asset_path'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/sass_processor.rb:188:in `font_path'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/funcall.rb:140:in `_perform'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/node.rb:50:in `perform'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:402:in `visit_return'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/base.rb:36:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:79:in `block in with_base'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:115:in `with_frame'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:79:in `with_base'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:158:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:8:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/funcall.rb:248:in `block (3 levels) in perform_sass_fn'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/funcall.rb:248:in `each'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/funcall.rb:248:in `block (2 levels) in perform_sass_fn'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/funcall.rb:247:in `catch'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/funcall.rb:247:in `block in perform_sass_fn'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:84:in `perform_arguments'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/funcall.rb:244:in `perform_sass_fn'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/funcall.rb:131:in `_perform'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/node.rb:50:in `perform'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/operation.rb:64:in `_perform'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/script/tree/node.rb:50:in `perform'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:468:in `visit_variable'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/base.rb:36:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:79:in `block in with_base'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:115:in `with_frame'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:79:in `with_base'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:158:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:325:in `block (2 levels) in visit_import'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:325:in `map'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:325:in `block in visit_import'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:88:in `block in with_import'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:115:in `with_frame'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:88:in `with_import'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:322:in `visit_import'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/base.rb:36:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:79:in `block in with_base'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:115:in `with_frame'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:79:in `with_base'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:158:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:325:in `block (2 levels) in visit_import'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:325:in `map'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:325:in `block in visit_import'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:88:in `block in with_import'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:115:in `with_frame'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:88:in `with_import'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:322:in `visit_import'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/base.rb:36:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:79:in `block in with_base'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:115:in `with_frame'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/stack.rb:79:in `with_base'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:158:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/base.rb:52:in `block in visit_children'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/base.rb:52:in `map'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/base.rb:52:in `visit_children'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:167:in `block in visit_children'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:166:in `visit_children'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/base.rb:36:in `block in visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:186:in `visit_root'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/base.rb:36:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:157:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/visitors/perform.rb:8:in `visit'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/root_node.rb:36:in `css_tree'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/tree/root_node.rb:20:in `render'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sass-3.4.16/lib/sass/engine.rb:278:in `render'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/sass_compressor.rb:48:in `call'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/sass_compressor.rb:28:in `call'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:75:in `call_processor'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:56:in `reverse_each'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/processor_utils.rb:56:in `call_processors'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:86:in `load_asset_by_uri'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:45:in `block in load'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:155:in `fetch_asset_from_dependency_cache'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/loader.rb:38:in `load'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/cached_environment.rb:20:in `block in initialize'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/cached_environment.rb:47:in `yield'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/cached_environment.rb:47:in `load'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/base.rb:63:in `find_asset'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/base.rb:70:in `find_all_linked_assets'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/manifest.rb:138:in `block in find'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/path_utils.rb:223:in `block in stat_tree'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/path_utils.rb:207:in `block in stat_directory'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/path_utils.rb:204:in `each'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/path_utils.rb:204:in `stat_directory'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/path_utils.rb:222:in `stat_tree'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/legacy.rb:105:in `each'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/legacy.rb:105:in `block in logical_paths'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/legacy.rb:104:in `each'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/legacy.rb:104:in `logical_paths'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/manifest.rb:136:in `find'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/sprockets/manifest.rb:162:in `compile'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-rails-2.3.2/lib/sprockets/rails/task.rb:70:in `block (3 levels) in define'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-3.2.0/lib/rake/sprocketstask.rb:147:in `with_logger'
remote: /tmp/build_9e450c140b29b08f655c356ad7f8fe81/vendor/bundle/ruby/2.0.0/gems/sprockets-rails-2.3.2/lib/sprockets/rails/task.rb:69:in `block (2 levels) in define'
remote: Tasks: TOP => assets:precompile
remote: (See full trace by running task with --trace)
remote: !
remote: ! Precompiling assets failed.
remote: !
remote:
Tt似乎与js文件有关。如果有任何帮助，我会使用云端9。
我的宝石文件：
source 'https://rubygems.org'
gem 'rails', '4.2.2'
gem 'bcrypt', '3.1.7'
gem 'bootstrap-sass', '3.2.0.0'
gem 'sass-rails', '5.0.2'
gem 'uglifier', '2.5.3'
gem 'coffee-rails', '4.1.0'
gem 'jquery-rails', '4.0.3'
gem 'turbolinks', '2.3.0'
gem 'jbuilder', '2.2.3'
gem 'sdoc', '0.4.0', group: :doc
group :development, :test do
gem 'sqlite3', '1.3.9'
gem 'byebug', '3.4.0'
gem 'web-console', '2.0.0.beta3'
gem 'spring', '1.1.3'
end
group :test do
gem 'minitest-reporters', '1.0.5'
gem 'mini_backtrace', '0.1.3'
gem 'guard-minitest', '2.3.1'
end
group :production do
gem 'pg', '0.17.1'
gem 'rails_12factor', '0.0.2'
end
我的application.js文件：
// This is a manifest file that'll be compiled into application.js, which will include all the files
// listed below.
//
// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
// or any plugin's vendor/assets/javascripts directory can be referenced here using a relative path.
//
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// compiled file.
//
// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
// about supported directives.
//
//= require jquery
//= require jquery_ujs
//= require bootstrap
//= require turbolinks
//= require_tree .
我以前在尝试推送到heroku时遇到了数据库问题，如果相关，我将database.yml文件更改为以下内容：
development:
adapter: sqlite3
database: db/development.sqlite3
pool: 5
timeout: 5000
test:
adapter: sqlite3
database: db/test.sqlite3
pool: 5
timeout: 5000
production:
adapter: postgresql
database: treebook
pool: 5
timeout: 5000
任何帮助都会非常感激，因为我过去几天都无法解决这个问题。
项目的github回购：https://github.com/Ghrehh/sitenew
编辑：
I, [2015-07-25T09:07:44.231727 #10217] INFO -- : Writing /home/ubuntu/workspace/sitenew/public/assets/application-3dba84f3550d057a7ebd21940bb94ece39b0ea686486aaaf4c32bb2fda950496.js
rake aborted!
NoMethodError: undefined method `[]' for nil:NilClass
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答案 0 :(得分：0)
链接到我的CSS文件中不存在的文件，这是一个愚蠢的错误。不要盲目地复制和粘贴之前项目中的文件！