部署到 Heroku 时出现应用程序错误答案

【问题标题】：Application error when deploying to Heroku部署到 Heroku 时出现应用程序错误
【发布时间】：2013-02-15 09:03:29
【问题描述】：

所以我花了大约一周的时间开发一个新应用程序，并且刚刚受到打击，我在部署到 Heroku 时似乎遇到了应用程序错误。我已向 Heroku 技术支持发送了一条消息，但它们似乎已被积压。

日志中有明显的错误，但是我不知道如何解决它们，因为我对 Rails 很陌生。

更新 1：rorra 的新 gemfile 内容帮助修复了最初的错误！（我的 gemfile 格式不正确）

Update2：现在收到以下消息：很抱歉，出了点问题。

New Heroku logs:


[StartupBlog]$heroku logs
2013-03-01T00:41:47+00:00 heroku[web.1]: State changed from starting to up
2013-03-01T00:41:48+00:00 app[web.1]: Started GET "/" for 174.95.207.136 at 2013-03-01 00:41:48 +0000
2013-03-01T00:41:48+00:00 app[web.1]: Processing by PagesController#home as HTML
2013-03-01T00:41:49+00:00 app[web.1]:   Rendered pages/home.html.erb within layouts/application (336.9ms)
2013-03-01T00:41:49+00:00 app[web.1]:   Rendered partials/_header.html.erb (302.2ms)
2013-03-01T00:41:49+00:00 app[web.1]: Completed 500 Internal Server Error in 671ms
2013-03-01T00:41:49+00:00 app[web.1]: 
2013-03-01T00:41:49+00:00 app[web.1]: ActionView::Template::Error (logo.png isn't precompiled):
2013-03-01T00:41:49+00:00 app[web.1]:     20: 
2013-03-01T00:41:49+00:00 app[web.1]:     21: <div class="navbar navbar-inverse navbar-static-top">
2013-03-01T00:41:49+00:00 app[web.1]:     22:   <div class="navbar-inner">
2013-03-01T00:41:49+00:00 app[web.1]:     23:     <a class="brand"><%=link_to logo, root_path %></a>
2013-03-01T00:41:49+00:00 app[web.1]:     24:     <ul class="nav pull-right">
2013-03-01T00:41:49+00:00 app[web.1]:     25:       <li class="home"><%= link_to "Home", root_path %></li>
2013-03-01T00:41:49+00:00 app[web.1]:     26:       <li><%= link_to "About", about_path %></li>
2013-03-01T00:41:49+00:00 app[web.1]:   app/helpers/application_helper.rb:14:in `logo'
2013-03-01T00:41:49+00:00 app[web.1]:   app/views/partials/_header.html.erb:23:in `_app_views_partials__header_html_erb___985491214305097811_33520600'
2013-03-01T00:41:49+00:00 app[web.1]:   app/views/pages/home.html.erb:1:in `_app_views_pages_home_html_erb__2767656240117324842_33999760'
2013-03-01T00:41:49+00:00 app[web.1]: 
2013-03-01T00:41:49+00:00 app[web.1]: 
2013-03-01T00:41:49+00:00 heroku[router]: at=info method=GET path=/ host=startupblog.herokuapp.com fwd="174.95.207.136" dyno=web.1 queue=0 wait=0ms connect=6ms service=1730ms status=500 bytes=643
2013-03-01T00:41:52+00:00 app[web.1]: Started GET "/" for 174.95.207.136 at 2013-03-01 00:41:52 +0000
2013-03-01T00:41:52+00:00 app[web.1]: Processing by PagesController#home as HTML
2013-03-01T00:41:52+00:00 app[web.1]:   Rendered partials/_header.html.erb (1.0ms)
2013-03-01T00:41:52+00:00 app[web.1]:   Rendered pages/home.html.erb within layouts/application (7.0ms)
2013-03-01T00:41:52+00:00 app[web.1]: Completed 500 Internal Server Error in 9ms
2013-03-01T00:41:52+00:00 app[web.1]: 
2013-03-01T00:41:52+00:00 app[web.1]: ActionView::Template::Error (logo.png isn't precompiled):
2013-03-01T00:41:52+00:00 app[web.1]:     20: 
2013-03-01T00:41:52+00:00 app[web.1]:     22:   <div class="navbar-inner">
2013-03-01T00:41:52+00:00 app[web.1]:     23:     <a class="brand"><%=link_to logo, root_path %></a>
2013-03-01T00:41:52+00:00 app[web.1]:   app/helpers/application_helper.rb:14:in `logo'
2013-03-01T00:41:52+00:00 app[web.1]:   app/views/partials/_header.html.erb:23:in `_app_views_partials__header_html_erb___985491214305097811_33520600'
2013-03-01T00:41:52+00:00 app[web.1]:   app/views/pages/home.html.erb:1:in `_app_views_pages_home_html_erb__2767656240117324842_33999760'
2013-03-01T00:41:52+00:00 app[web.1]:     21: <div class="navbar navbar-inverse navbar-static-top">
2013-03-01T00:41:52+00:00 app[web.1]:     26:       <li><%= link_to "About", about_path %></li>
2013-03-01T00:41:52+00:00 app[web.1]:     24:     <ul class="nav pull-right">
2013-03-01T00:41:52+00:00 app[web.1]: 
2013-03-01T00:41:52+00:00 app[web.1]: 
2013-03-01T00:41:52+00:00 app[web.1]:     25:       <li class="home"><%= link_to "Home", root_path %></li>
2013-03-01T00:41:52+00:00 heroku[router]: at=info method=GET path=/ host=startupblog.herokuapp.com fwd="174.95.207.136" dyno=web.1 queue=0 wait=6ms connect=27ms service=119ms status=500 bytes=643
2013-03-01T00:41:55+00:00 app[web.1]: Started GET "/" for 174.95.207.136 at 2013-03-01 00:41:55 +0000
2013-03-01T00:41:55+00:00 app[web.1]: Processing by PagesController#home as HTML
2013-03-01T00:41:55+00:00 app[web.1]:   Rendered partials/_header.html.erb (0.8ms)
2013-03-01T00:41:55+00:00 app[web.1]:   Rendered pages/home.html.erb within layouts/application (1.1ms)
2013-03-01T00:41:55+00:00 app[web.1]: Completed 500 Internal Server Error in 5ms
2013-03-01T00:41:55+00:00 app[web.1]: ActionView::Template::Error (logo.png isn't precompiled):
2013-03-01T00:41:55+00:00 app[web.1]:     20: 
2013-03-01T00:41:55+00:00 app[web.1]:     22:   <div class="navbar-inner">
2013-03-01T00:41:55+00:00 app[web.1]: 
2013-03-01T00:41:55+00:00 app[web.1]:     21: <div class="navbar navbar-inverse navbar-static-top">
2013-03-01T00:41:55+00:00 app[web.1]:     23:     <a class="brand"><%=link_to logo, root_path %></a>
2013-03-01T00:41:55+00:00 app[web.1]:     25:       <li class="home"><%= link_to "Home", root_path %></li>
2013-03-01T00:41:55+00:00 app[web.1]:     24:     <ul class="nav pull-right">
2013-03-01T00:41:55+00:00 app[web.1]:     26:       <li><%= link_to "About", about_path %></li>
2013-03-01T00:41:55+00:00 app[web.1]:   app/helpers/application_helper.rb:14:in `logo'
2013-03-01T00:41:55+00:00 app[web.1]:   app/views/partials/_header.html.erb:23:in `_app_views_partials__header_html_erb___985491214305097811_33520600'
2013-03-01T00:41:55+00:00 app[web.1]:   app/views/pages/home.html.erb:1:in `_app_views_pages_home_html_erb__2767656240117324842_33999760'
2013-03-01T00:41:55+00:00 app[web.1]: 
2013-03-01T00:41:55+00:00 app[web.1]: 
2013-03-01T00:41:55+00:00 heroku[router]: at=info method=GET path=/ host=startupblog.herokuapp.com fwd="174.95.207.136" dyno=web.1 queue=0 wait=0ms connect=5ms service=25ms status=500 bytes=643
2013-03-01T00:41:59+00:00 app[web.1]: Started GET "/" for 174.95.207.136 at 2013-03-01 00:41:59 +0000
2013-03-01T00:41:59+00:00 app[web.1]:   Rendered partials/_header.html.erb (0.7ms)
2013-03-01T00:41:59+00:00 app[web.1]: Processing by PagesController#home as HTML
2013-03-01T00:41:59+00:00 app[web.1]:   Rendered pages/home.html.erb within layouts/application (0.9ms)
2013-03-01T00:41:59+00:00 app[web.1]: Completed 500 Internal Server Error in 1ms
2013-03-01T00:41:59+00:00 heroku[router]: at=info method=GET path=/ host=startupblog.herokuapp.com fwd="174.95.207.136" dyno=web.1 queue=0 wait=0ms connect=2ms service=20ms status=500 bytes=643
2013-03-01T00:41:59+00:00 app[web.1]: 
2013-03-01T00:41:59+00:00 app[web.1]: ActionView::Template::Error (logo.png isn't precompiled):
2013-03-01T00:41:59+00:00 app[web.1]:     20: 
2013-03-01T00:41:59+00:00 app[web.1]:     22:   <div class="navbar-inner">
2013-03-01T00:41:59+00:00 app[web.1]:     23:     <a class="brand"><%=link_to logo, root_path %></a>
2013-03-01T00:41:59+00:00 app[web.1]:     25:       <li class="home"><%= link_to "Home", root_path %></li>
2013-03-01T00:41:59+00:00 app[web.1]:     26:       <li><%= link_to "About", about_path %></li>
2013-03-01T00:41:59+00:00 app[web.1]:     21: <div class="navbar navbar-inverse navbar-static-top">
2013-03-01T00:41:59+00:00 app[web.1]:   app/views/partials/_header.html.erb:23:in `_app_views_partials__header_html_erb___985491214305097811_33520600'
2013-03-01T00:41:59+00:00 app[web.1]:   app/views/pages/home.html.erb:1:in `_app_views_pages_home_html_erb__2767656240117324842_33999760'
2013-03-01T00:41:59+00:00 app[web.1]: 
2013-03-01T00:41:59+00:00 app[web.1]: 
2013-03-01T00:41:59+00:00 app[web.1]:   app/helpers/application_helper.rb:14:in `logo'
2013-03-01T00:41:59+00:00 app[web.1]:     24:     <ul class="nav pull-right">
2013-03-01T00:42:22+00:00 app[web.1]: Started GET "/" for 174.95.207.136 at 2013-03-01 00:42:22 +0000
2013-03-01T00:42:22+00:00 app[web.1]: Processing by PagesController#home as HTML
2013-03-01T00:42:22+00:00 app[web.1]:   Rendered partials/_header.html.erb (0.9ms)
2013-03-01T00:42:22+00:00 app[web.1]:   Rendered pages/home.html.erb within layouts/application (1.3ms)
2013-03-01T00:42:22+00:00 app[web.1]: Completed 500 Internal Server Error in 3ms
2013-03-01T00:42:22+00:00 app[web.1]: 
2013-03-01T00:42:22+00:00 app[web.1]:     25:       <li class="home"><%= link_to "Home", root_path %></li>
2013-03-01T00:42:22+00:00 app[web.1]:   app/views/partials/_header.html.erb:23:in `_app_views_partials__header_html_erb___985491214305097811_33520600'
2013-03-01T00:42:22+00:00 app[web.1]:     26:       <li><%= link_to "About", about_path %></li>
2013-03-01T00:42:22+00:00 app[web.1]: 
2013-03-01T00:42:22+00:00 app[web.1]:   app/views/pages/home.html.erb:1:in `_app_views_pages_home_html_erb__2767656240117324842_33999760'
2013-03-01T00:42:22+00:00 app[web.1]:   app/helpers/application_helper.rb:14:in `logo'
2013-03-01T00:42:22+00:00 app[web.1]: 
2013-03-01T00:42:22+00:00 app[web.1]: ActionView::Template::Error (logo.png isn't precompiled):
2013-03-01T00:42:22+00:00 app[web.1]:     23:     <a class="brand"><%=link_to logo, root_path %></a>
2013-03-01T00:42:22+00:00 app[web.1]:     20: 
2013-03-01T00:42:22+00:00 app[web.1]:     21: <div class="navbar navbar-inverse navbar-static-top">
2013-03-01T00:42:22+00:00 app[web.1]:     22:   <div class="navbar-inner">
2013-03-01T00:42:22+00:00 app[web.1]:     24:     <ul class="nav pull-right">
2013-03-01T00:42:22+00:00 heroku[router]: at=info method=GET path=/ host=startupblog.herokuapp.com fwd="174.95.207.136" dyno=web.1 queue=0 wait=5ms connect=15ms service=25ms status=500 bytes=643



source 'https://rubygems.org'

gem 'rails', '3.2.11'

group :development do
  gem 'sqlite3', '1.3.5'
  gem 'devise'
end


# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '3.2.5'
  gem 'bootstrap-sass', '~> 2.3.0.1'
  gem 'coffee-rails', '3.2.2'
  gem 'omniauth'
gem 'omniauth-twitter'
  gem 'uglifier', '1.2.3'
 gem 'mongrel',  '1.2.0.pre2'
 gem 'devise'

end


gem 'jquery-rails', '2.0.2'

group :production do
  gem 'pg', '0.12.2'

end

【问题讨论】：

标签： ruby-on-rails ruby-on-rails-3 deployment heroku

【解决方案1】：

出现的错误是：

/app/config/initializers/devise.rb:3:in `<top (required)>': uninitialized constant Devise (NameError)

你的 Gemfile 中有设计吗？

【讨论】：

【解决方案2】：

您的问题已明确列出：

/app/config/initializers/devise.rb:3:in `<top (required)>': uninitialized constant Devise (NameError)

如果您可以公开您的应用程序，我将能够立即对其进行检查，但很可能您没有提交您的 Gemfile 或 Gemfile.lock，请确保您的 Gemfile 中列出了您的设计，例如

gem 'devise'

然后运行

bundle

并将 Gemfile 和 Gemfile.lock 提交到您的源代码中并将其推送到 heroku

【讨论】：

感谢您的回复。似乎仍然遇到同样的错误，我已将 gemfile 附加到操作中。
那是因为你的 gem 'devise' 在组 'development' 和 'assets' 组 'assets' 是在编译 js 和 css 时加载的组 'development' 是在你启动时加载的桌面上的服务器您必须使其对所有环境全局可用，这意味着在任何组之外，请查看：gist.github.com/rorra/5061442
确保你在 config/application.rb 上有这样的东西：gist.github.com/rorra/5061631

更新 1：rorra 的新 gemfile 内容帮助修复了最初的错误！ （我的 gemfile 格式不正确）

Update2：现在收到以下消息：很抱歉，出了点问题。

更新 1：rorra 的新 gemfile 内容帮助修复了最初的错误！（我的 gemfile 格式不正确）