将Ruby on Rails推送到heroku时出错
我已经将pg和rails_12factor gem添加到我的gemfile并尝试将我的应用程序推送到heroku但网站只是说应用程序错误，我几周前能够通过遵循我认为相同的步骤成功完成此操作。 我做了一个小测试应用程序只是为了重新创建这个错误，这是我尝试推送到heroku时的输出：
Counting objects: 3, done. Delta compression using up to 6 threads. Compressing objects: 100% (3/3), done. Writing objects: 100% (3/3), 336 bytes | 336.00 KiB/s, done. Total 3 (delta 2), reused 0 (delta 0) remote: Compressing source files... done. remote: Building source: remote: remote: -----> Ruby app detected remote: -----> Compiling Ruby/Rails remote: -----> Using Ruby version: ruby-2.3.4 remote: ###### WARNING: remote: Removing `Gemfile.lock` because it was generated on Windows. remote: Bundler will do a full resolve so native gems are handled properly. remote: This may result in unexpected gem versions being used in your app. remote: In rare occasions Bundler may not be able to resolve your dependencies at all. remote: https://devcenter.heroku.com/articles/bundler-windows-gemfile remote: remote: -----> Installing dependencies using bundler 1.15.2 remote: Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 remote: The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86- mingw32 x86-mswin32 x64-mingw32 java`. remote: Fetching gem metadata from https://rubygems.org/.......... remote: Fetching version metadata from https://rubygems.org/.. remote: Fetching dependency metadata from https://rubygems.org/. remote: Resolving dependencies... remote: Using rake 12.3.0 remote: Using concurrent-ruby 1.0.5 remote: Using minitest 5.11.3 remote: Using thread_safe 0.3.6 remote: Using builder 3.2.3 remote: Using erubi 1.7.0 remote: Using mini_portile2 2.3.0 remote: Using crass 1.0.3 remote: Using rack 2.0.4 remote: Using nio4r 2.2.0 remote: Using websocket-extensions 0.1.3 remote: Using mini_mime 1.0.0 remote: Using arel 8.0.0 remote: Using bundler 1.15.2 remote: Using coffee-script-source 1.12.2 remote: Using execjs 2.7.0 remote: Using method_source 0.9.0 remote: Using thor 0.20.0 remote: Using ffi 1.9.21 remote: Using multi_json 1.13.1 remote: Fetching pg 0.17.1 remote: Using puma 3.11.2 remote: Using rails_serve_static_assets 0.0.5 remote: Using rails_stdout_logging 0.0.5 remote: Using rb-fsevent 0.10.2 remote: Using tilt 2.0.8 remote: Using turbolinks-source 5.1.0 remote: Using i18n 0.9.3 remote: Using tzinfo 1.2.5 remote: Using nokogiri 1.8.2 remote: Using websocket-driver 0.6.5 remote: Using rack-test 0.8.2 remote: Using sprockets 3.7.1 remote: Using mail 2.7.0 remote: Using uglifier 4.1.5 remote: Using coffee-script 2.4.1 remote: Using rb-inotify 0.9.10 remote: Fetching rails_12factor 0.0.2 remote: Using turbolinks 5.1.0 remote: Using activesupport 5.1.4 remote: Using loofah 2.1.1 remote: Using sass-listen 4.0.0 remote: Using rails-dom-testing 2.0.3 remote: Using globalid 0.4.1 remote: Using activemodel 5.1.4 remote: Using jbuilder 2.7.0 remote: Using rails-html-sanitizer 1.0.3 remote: Using sass 3.5.5 remote: Using activejob 5.1.4 remote: Using activerecord 5.1.4 remote: Using actionview 5.1.4 remote: Using actionpack 5.1.4 remote: Using actioncable 5.1.4 remote: Using actionmailer 5.1.4 remote: Using railties 5.1.4 remote: Using sprockets-rails 3.2.1 remote: Using coffee-rails 4.2.2 remote: Using rails 5.1.4 remote: Using sass-rails 5.0.7 remote: Installing pg 0.17.1 with native extensions remote: Installing rails_12factor 0.0.2 remote: Bundle complete! 15 Gemfile dependencies, 59 gems now installed. remote: Gems in the groups development and test were not installed. remote: Bundled gems are installed into ./vendor/bundle. remote: Bundle completed (9.84s) remote: Cleaning up the bundler cache. remote: Removing pg (1.0.0) remote: Removing rails_12factor (0.0.3) remote: The latest bundler is 1.16.1, but you are currently running 1.15.2. remote: To update, run `gem install bundler` remote: -----> Installing node-v6.11.1-linux-x64 remote: -----> Detecting rake tasks remote: -----> Preparing app for Rails asset pipeline remote: Running: rake assets:precompile remote: Yarn executable was not detected in the system. remote: Download Yarn at https://yarnpkg.com/en/docs/install remote: Asset precompilation completed (1.55s) remote: Cleaning assets remote: Running: rake assets:clean remote: remote: ###### WARNING: remote: Removing `Gemfile.lock` because it was generated on Windows. remote: Bundler will do a full resolve so native gems are handled properly. remote: This may result in unexpected gem versions being used in your app. remote: In rare occasions Bundler may not be able to resolve your dependencies at all. remote: https://devcenter.heroku.com/articles/bundler-windows-gemfile remote: remote: ###### WARNING: remote: No Procfile detected, using the default web server. remote: We recommend explicitly declaring how to boot your server process via a Procfile. remote: https://devcenter.heroku.com/articles/ruby-default-web-server remote: remote: -----> Discovering process types remote: Procfile declares types -> (none) remote: Default types for buildpack -> console, rake, web, worker remote: remote: -----> Compressing... remote: Done: 37.4M remote: -----> Launching... remote: Released v9 remote: https://coolguygear.herokuapp.com/ deployed to Heroku remote: remote: Verifying deploy... done. To https://git.heroku.com/coolguygear.git 69e3355..ce67809 master -> master C:\Users\Jared\testapp> inheritance人Heroku日志：
2018-02-07T16:22:53.750068+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=coolguygear.herokuapp.com request_id=12882767-fed0-4354-b265-1d06931b22eb fwd="100.14.28.68" dyno= connect= service= status=503 bytes= protocol=http 2018-02-07T16:25:18.468191+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=HEAD path="/" host=coolguygear.herokuapp.com request_id=09ea1016-ba0c-4d77-8a71-92cd0388874d fwd="34.229.222.142" dyno= connect= service= status=503 bytes= protocol=https 2018-02-07T16:27:22.000000+00:00 app[api]: Build started by user pagaley12@outlook.com 2018-02-07T16:27:43.618675+00:00 heroku[web.1]: State changed from crashed to starting 2018-02-07T16:27:43.286746+00:00 app[api]: Deploy 32766c38 by user pagaley12@outlook.com 2018-02-07T16:27:43.286746+00:00 app[api]: Release v11 created by user pagaley12@outlook.com 2018-02-07T16:27:22.000000+00:00 app[api]: Build succeeded 2018-02-07T16:27:47.302392+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 24230 -e production` 2018-02-07T16:27:52.402259+00:00 heroku[web.1]: Process exited with status 1 2018-02-07T16:27:52.283395+00:00 app[web.1]: => Booting Puma 2018-02-07T16:27:52.283421+00:00 app[web.1]: => Run `rails server -h` for more startup options 2018-02-07T16:27:52.283420+00:00 app[web.1]: => Rails 5.1.4 application starting in production 2018-02-07T16:27:52.283486+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.4/lib/active_record/connection_adapters/connection_specification.rb:188:in `rescue in spec': Specified 'postgresql' for database adapter, but the gem is not loaded. Add `gem 'pg'` to your Gemfile (and ensure its version is at the minimum required by ActiveRecord). (Gem::LoadError) 2018-02-07T16:27:52.283509+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.4/lib/active_record/connection_adapters/connection_specification.rb:185:in `spec' 2018-02-07T16:27:52.283423+00:00 app[web.1]: Exiting 2018-02-07T16:27:52.283534+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.4/lib/active_record/connection_handling.rb:58:in `establish_connection' 2018-02-07T16:27:52.283527+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:880:in `establish_connection' 2018-02-07T16:27:52.283537+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/lazy_load_hooks.rb:69:in `instance_eval' 2018-02-07T16:27:52.283536+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.4/lib/active_record/railtie.rb:124:in `block (2 levels) in ' 2018-02-07T16:27:52.283541+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/lazy_load_hooks.rb:60:in `with_execution_control' 2018-02-07T16:27:52.283544+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/lazy_load_hooks.rb:50:in `block in run_load_hooks' 2018-02-07T16:27:52.283539+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/lazy_load_hooks.rb:69:in `block in execute_hook' 2018-02-07T16:27:52.283542+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/lazy_load_hooks.rb:65:in `execute_hook' 2018-02-07T16:27:52.283546+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/lazy_load_hooks.rb:49:in `each' 2018-02-07T16:27:52.283552+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.4/lib/active_record/base.rb:326:in `' 2018-02-07T16:27:52.283550+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/lazy_load_hooks.rb:49:in `run_load_hooks' 2018-02-07T16:27:52.283555+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:292:in `require' 2018-02-07T16:27:52.283557+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:292:in `block in require' 2018-02-07T16:27:52.283553+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.4/lib/active_record/base.rb:25:in `' 2018-02-07T16:27:52.283561+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:258:in `load_dependency' 2018-02-07T16:27:52.283562+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:292:in `require' 2018-02-07T16:27:52.283564+00:00 app[web.1]: from /app/app/models/application_record.rb:1:in `' 2018-02-07T16:27:52.283566+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:292:in `require' 2018-02-07T16:27:52.283570+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:292:in `block in require' 2018-02-07T16:27:52.283574+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:292:in `require' 2018-02-07T16:27:52.283572+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:258:in `load_dependency' 2018-02-07T16:27:52.283583+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies/interlock.rb:12:in `block in loading' 2018-02-07T16:27:52.283577+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:379:in `block in require_or_load' 2018-02-07T16:27:52.283579+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:36:in `block in load_interlock' 2018-02-07T16:27:52.283587+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/concurrency/share_lock.rb:149:in `exclusive' 2018-02-07T16:27:52.283592+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:36:in `load_interlock' 2018-02-07T16:27:52.283590+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies/interlock.rb:11:in `loading' 2018-02-07T16:27:52.283596+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:357:in `require_or_load' 2018-02-07T16:27:52.283599+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:335:in `depend_on' 2018-02-07T16:27:52.283605+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/engine.rb:476:in `block (2 levels) in eager_load!' 2018-02-07T16:27:52.283603+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:251:in `require_dependency' 2018-02-07T16:27:52.283609+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/engine.rb:475:in `each' 2018-02-07T16:27:52.283628+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/engine.rb:475:in `block in eager_load!' 2018-02-07T16:27:52.283635+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/application/finisher.rb:67:in `each' 2018-02-07T16:27:52.283630+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/engine.rb:473:in `each' 2018-02-07T16:27:52.283631+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/engine.rb:473:in `eager_load!' 2018-02-07T16:27:52.283633+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/engine.rb:354:in `eager_load!' 2018-02-07T16:27:52.283638+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/initializable.rb:30:in `instance_exec' 2018-02-07T16:27:52.283637+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/application/finisher.rb:67:in `block in ' 2018-02-07T16:27:52.283644+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/initializable.rb:59:in `block in run_initializers' 2018-02-07T16:27:52.283645+00:00 app[web.1]: from /app/vendor/ruby-2.3.3/lib/ruby/2.3.0/tsort.rb:228:in `block in tsort_each' 2018-02-07T16:27:52.283642+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/initializable.rb:30:in `run' 2018-02-07T16:27:52.283647+00:00 app[web.1]: from /app/vendor/ruby-2.3.3/lib/ruby/2.3.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component' 2018-02-07T16:27:52.283649+00:00 app[web.1]: from /app/vendor/ruby-2.3.3/lib/ruby/2.3.0/tsort.rb:431:in `each_strongly_connected_component_from' 2018-02-07T16:27:52.283652+00:00 app[web.1]: from /app/vendor/ruby-2.3.3/lib/ruby/2.3.0/tsort.rb:349:in `block in each_strongly_connected_component' 2018-02-07T16:27:52.283654+00:00 app[web.1]: from /app/vendor/ruby-2.3.3/lib/ruby/2.3.0/tsort.rb:347:in `each' 2018-02-07T16:27:52.283660+00:00 app[web.1]: from /app/vendor/ruby-2.3.3/lib/ruby/2.3.0/tsort.rb:347:in `each_strongly_connected_component' 2018-02-07T16:27:52.283663+00:00 app[web.1]: from /app/vendor/ruby-2.3.3/lib/ruby/2.3.0/tsort.rb:205:in `tsort_each' 2018-02-07T16:27:52.283656+00:00 app[web.1]: from /app/vendor/ruby-2.3.3/lib/ruby/2.3.0/tsort.rb:347:in `call' 2018-02-07T16:27:52.283669+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/application.rb:353:in `initialize!' 2018-02-07T16:27:52.283661+00:00 app[web.1]: from /app/vendor/ruby-2.3.3/lib/ruby/2.3.0/tsort.rb:226:in `tsort_each' 2018-02-07T16:27:52.283667+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/initializable.rb:58:in `run_initializers' 2018-02-07T16:27:52.283672+00:00 app[web.1]: from /app/config/environment.rb:5:in `' 2018-02-07T16:27:52.283682+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/rack-2.0.4/lib/rack/builder.rb:55:in `instance_eval' 2018-02-07T16:27:52.283674+00:00 app[web.1]: from config.ru:3:in `require_relative' 2018-02-07T16:27:52.283688+00:00 app[web.1]: from config.ru:in `new' 2018-02-07T16:27:52.283678+00:00 app[web.1]: from config.ru:3:in `block in ' 2018-02-07T16:27:52.283695+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/rack-2.0.4/lib/rack/builder.rb:49:in `eval' 2018-02-07T16:27:52.283684+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/rack-2.0.4/lib/rack/builder.rb:55:in `initialize' 2018-02-07T16:27:52.283691+00:00 app[web.1]: from config.ru:in `' 2018-02-07T16:27:52.283741+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/rack-2.0.4/lib/rack/server.rb:319:in `build_app_and_options_from_config' 2018-02-07T16:27:52.283746+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/rack-2.0.4/lib/rack/server.rb:219:in `app' 2018-02-07T16:27:52.283737+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/rack-2.0.4/lib/rack/builder.rb:49:in `new_from_string' 2018-02-07T16:27:52.283739+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/rack-2.0.4/lib/rack/builder.rb:40:in `parse_file' 2018-02-07T16:27:52.283748+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:24:in `app' 2018-02-07T16:27:52.283750+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/rack-2.0.4/lib/rack/server.rb:354:in `wrapped_app' 2018-02-07T16:27:52.283752+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/rack-2.0.4/lib/rack/server.rb:283:in `start' 2018-02-07T16:27:52.283755+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:44:in `start' 2018-02-07T16:27:52.283763+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:130:in `tap' 2018-02-07T16:27:52.283762+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:135:in `block in perform' 2018-02-07T16:27:52.283837+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run' 2018-02-07T16:27:52.283838+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command' 2018-02-07T16:27:52.283767+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:130:in `perform' 2018-02-07T16:27:52.283840+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch' 2018-02-07T16:27:52.283849+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/commands.rb:16:in `' 2018-02-07T16:27:52.283845+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/command/base.rb:63:in `perform' 2018-02-07T16:27:52.283847+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/command.rb:44:in `invoke' 2018-02-07T16:27:52.283851+00:00 app[web.1]: from bin/rails:4:in `require' 2018-02-07T16:27:52.283852+00:00 app[web.1]: from bin/rails:4:in `' 2018-02-07T16:27:52.418583+00:00 heroku[web.1]: State changed from starting to crashed 2018-02-07T16:27:55.488508+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=coolguygear.herokuapp.com request_id=1b71ed89-fe54-437d-b13d-082c848c328c fwd="100.14.28.68" dyno= connect= service= status=503 bytes= protocol=http 2018-02-07T16:27:55.831207+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=coolguygear.herokuapp.com request_id=cc0e8bf6-f754-4ba2-be25-4e924afe0b71 fwd="100.14.28.68" dyno= connect= service= status=503 bytes= protocol=http 2018-02-07T16:27:56.485232+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=coolguygear.herokuapp.com request_id=e2530067-459c-4fea-a62e-7029fef88952 fwd="100.14.28.68" dyno= connect= service= status=503 bytes= protocol=http 2018-02-07T16:27:56.568374+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=coolguygear.herokuapp.com request_id=4d909fee-121c-4086-9060-5abb0531f9bd fwd="100.14.28.68" dyno= connect= service= status=503 bytes= protocol=http 2018-02-07T16:27:57.266204+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=coolguygear.herokuapp.com request_id=77ba5529-63bd-4257-9ee1-106c3f34d353 fwd="100.14.28.68" dyno= connect= service= status=503 bytes= protocol=http 2018-02-07T16:27:57.348456+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=coolguygear.herokuapp.com request_id=b4846660-d494-47c2-982a-626635621b69 fwd="100.14.28.68" dyno= connect= service= status=503 bytes= protocol=http
您必须在gemfile中指定特定的pg版本。 如果没有，您将使用最新的可用版本（1.0.0）。 但是Rails仍然不支持这个版本。 点击此处： https ： //github.com/rails/rails/issues/31673
Yous应该使用版本0.21
gem 'pg', '0.21'
您是否尝试过命令heroku日志来打印rails服务器的输出？ 您可能会发现对您遇到的问题有用的东西。