Ruby on rails 无法为heroku预编译资产

在尝试预编译资产时，如何修复此错误

命令：

bundle exec rake资产：预编译

错误：

rake aborted! LoadError: cannot load such file --
sitemap_generator/tasks
/Users/.../Documents/projects/.../...-.../Rakefile:5:in
`require'
/Users/.../Documents/projects/.../...-.../Rakefile:5:in
`<top (required)>'
/Users/.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/rake_module.rb:28:in
`load'
/Users/.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/rake_module.rb:28:in
`load_rakefile'
/Users/.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:689:in
`raw_load_rakefile'
/Users/.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:94:in
`block in load_rakefile'
/Users/.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:176:in
`standard_exception_handling'
/Users/.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:93:in
`load_rakefile'
/Users/.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:77:in
`block in run'
/Users/pramod/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:176:in
`standard_exception_handling'
/Users/.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:75:in
`run' /Users/.../.rvm/rubies/ruby-2.2.1/bin/rake:33:in `<main>'

rake中止！LoadError:无法加载此文件--
站点地图\u生成器/任务
/Users/../Documents/projects/../../…-…/Rakefile:5:in
`需要
/Users/../Documents/projects/../../…-…/Rakefile:5:in
`'
/Users/../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/rake_module.rb:28:in
`装载
/Users/../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/rake_module.rb:28:in
`装载_耙铲'
/Users/../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:689:in
`原始负载耙铲'
/Users/../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:94:in
`负载中的块_rakefile'
/Users/../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:176:in
`标准(例外)(处理)
/Users/../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:93:in
`装载_耙铲'
/Users/../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:77:in
`阻塞运行'
/Users/pramod/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:176:in
`标准(例外)(处理)
/Users/../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:75:in
`运行'/Users/...rvm/rubies/ruby-2.2.1/bin/rake:33:in`'

我的档案：

source 'https://rubygems.org'

gem 'haml-rails'
gem "font-awesome-rails"
gem 'font-awesome-sass', '~> 4.2.2'
gem 'bootstrap-sass', '~> 3.3.1'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.0'
ruby '2.2.1'

gem 'sitemap-generator'
gem 'pg', '~> 0.15' #postgresql gem
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.0'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
gem 'sprockets-rails', '2.3.3'

# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc
gem 'rails_12factor', group: :production

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug'

  # Access an IRB console on exception pages or by using <%= console %> in views
  gem 'web-console', '~> 2.0'

  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
#  gem 'spring'
end

源代码'https://rubygems.org'
宝石“哈姆轨道”
gem“字体很棒的rails”
gem'font-awesome-sass'，“~>4.2.2”
gem'bootstrap sass'，“~>3.3.1”
#捆绑边缘Rails：gem'Rails'，github'Rails/Rails'
gem“rails”、“4.2.0”
ruby“2.2.1”
gem“站点地图生成器”
gem'pg'，'~>0.15'#postgresql gem
#将SCS用于样式表
gem'sass-rails'，“~>5.0”
#使用Uglifier作为JavaScript资产的压缩器
gem'uglifier'，'>=1.3.0'
#将CoffeeScript用于.coffee资产和视图
gem“咖啡轨”，“~>4.1.0”
#看https://github.com/sstephenson/execjs#readme 获取更多受支持的运行时
#宝石“therubyracer”，平台：：ruby
#使用jquery作为JavaScript库
gem'jqueryrails'
#Turbolinks使web应用程序中的以下链接更快。阅读更多：https://github.com/rails/turbolinks
gem“涡轮链接”
#轻松构建JSON API。阅读更多：https://github.com/rails/jbuilder
gem'jbuilder'，“~>2.0”
gem“链轮轨道”，“2.3.3”
#bundle exec rake doc:rails在doc/API下生成API。
gem'sdoc'，'~>0.4.0'，组：：doc
gem“rails\u 12factor”，集团：：生产
#使用ActiveModel具有\u安全\u密码
#gem'bcrypt'，“~>3.1.7”
#使用Unicorn作为应用程序服务器
#宝石“独角兽”
#使用Capistrano进行部署
#gem“capistrano rails”，集团：：开发
小组：开发，：测试
#在代码中的任意位置调用“byebug”以停止执行并获得调试器控制台
宝石“比伯”
#在异常页面上或通过在视图中使用访问IRB控制台
gem“web控制台”，“~>2.0”
#Spring通过让应用程序在后台运行来加速开发。阅读更多：https://github.com/rails/spring
#宝石“春天”
结束

您在

gem文件中包含了错误的gem

。包括，这是一个小型命令行生成器。但是，您的代码取决于哪个功能更全面。将破折号更改为下划线，您就可以开始了：

gem 'sitemap_generator'

---

我会尝试一下，但想强调的是，使用当前的站点地图生成器语法，可以在我的本地机器上工作，但不能在heroku上工作。我会随时检查你的答案，你可能已经在本地机器上安装了正确的gem，但是Heroku总是从头开始&只安装gem文件中列出的gem。