我以前能够成功部署到Heroku，但是，在安装了carrierwave-aws gem之后，出现标题中列出的错误。我查看了日志并看到错误：
remote: Running: rake assets:precompile
remote: rake aborted!
remote: KeyError: key not found: "S3_BUCKET_NAME"
当我运行Rails控制台并运行ENV.fetch（'S3_BUCKET_NAME'）时，它会显示存储桶。我确实安装了dotenv-rails gem，但不确定如何修复Heroku遇到的错误。 aws凭证位于添加到我的gitignore中的.env文件中，并且carrierwave.rb正在以与在Rails控制台中尝试的相同方式来获取凭证。任何帮助将不胜感激！
我尝试按照此处here的建议将：config.assets.initialize_on_precompile = false放入我的application.rb文件，但这只是为“无法编译ruby应用程序”提供了另一个错误
如果需要，这里是完整的服务器日志：
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Ruby app detected
remote: -----> Compiling Ruby/Rails
remote: -----> Using Ruby version: ruby-2.5.1
remote: -----> Installing dependencies using bundler 1.15.2
remote: Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
remote: Warning: the running version of Bundler (1.15.2) is older than the version that created the lockfile (1.17.1). We suggest you upgrade to the latest version of Bundler by running `gem install bundler`.
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: Using rake 12.3.2
remote: Using concurrent-ruby 1.1.3
remote: Using minitest 5.11.3
remote: Using thread_safe 0.3.6
remote: Using builder 3.2.3
remote: Using erubi 1.7.1
remote: Using mini_portile2 2.3.0
remote: Using crass 1.0.4
remote: Using rack 2.0.6
remote: Using nio4r 2.3.1
remote: Using websocket-extensions 0.1.3
remote: Using mini_mime 1.0.1
remote: Using arel 9.0.0
remote: Using mimemagic 0.3.2
remote: Using execjs 2.7.0
remote: Fetching aws-eventstream 1.0.1
remote: Fetching aws-partitions 1.125.0
remote: Fetching aws-sigv4 1.0.3
remote: Installing aws-eventstream 1.0.1
remote: Installing aws-sigv4 1.0.3
remote: Installing aws-partitions 1.125.0
remote: Fetching jmespath 1.4.0
remote: Using bcrypt 3.1.12
remote: Using msgpack 1.2.4
remote: Using popper_js 1.14.5
remote: Using rb-fsevent 0.10.3
remote: Using ffi 1.9.25
remote: Using bundler 1.15.2
remote: Fetching mime-types-data 3.2018.0812
remote: Installing jmespath 1.4.0
remote: Installing mime-types-data 3.2018.0812
remote: Using coderay 1.1.2
remote: Using coffee-script-source 1.12.2
remote: Using method_source 0.9.2
remote: Using thor 0.20.3
remote: Using orm_adapter 0.5.0
remote: Fetching dotenv 2.5.0
remote: Installing dotenv 2.5.0
remote: Using multi_json 1.13.1
remote: Fetching mini_magick 4.9.2
remote: Using ostruct 0.1.0
remote: Using pg 1.1.3
remote: Using puma 3.12.0
remote: Using tilt 2.0.9
remote: Using sohel_view_tool 0.1.0
remote: Using turbolinks-source 5.2.0
remote: Using tzinfo 1.2.5
remote: Using nokogiri 1.8.5
remote: Using websocket-driver 0.7.0
remote: Using mail 2.7.1
remote: Using i18n 1.1.1
remote: Using rack-test 1.1.0
remote: Using warden 1.2.8
remote: Using sprockets 3.7.2
remote: Using marcel 0.3.3
remote: Using autoprefixer-rails 9.4.2
remote: Using uglifier 4.1.20
remote: Using bootsnap 1.3.2
remote: Using rb-inotify 0.9.10
remote: Installing mini_magick 4.9.2
remote: Using coffee-script 2.4.1
remote: Using pry 0.12.2
remote: Fetching aws-sdk-core 3.44.0
remote: Fetching mime-types 3.2.2
remote: Installing mime-types 3.2.2
remote: Installing aws-sdk-core 3.44.0
remote: Using turbolinks 5.2.0
remote: Using loofah 2.2.3
remote: Using activesupport 5.2.2
remote: Using sass-listen 4.0.0
remote: Using rails-html-sanitizer 1.0.4
remote: Using rails-dom-testing 2.0.3
remote: Using globalid 0.4.1
remote: Using activemodel 5.2.2
remote: Using jbuilder 2.8.0
remote: Using sass 3.7.2
remote: Using activejob 5.2.2
remote: Using activerecord 5.2.2
remote: Fetching carrierwave 1.2.3
remote: Using actionview 5.2.2
remote: Using friendly_id 5.2.4
remote: Using petergate 2.0.1
remote: Using bootstrap 4.1.3
remote: Using actionpack 5.2.2
remote: Using actioncable 5.2.2
remote: Using actionmailer 5.2.2
remote: Using activestorage 5.2.2
remote: Using railties 5.2.2
remote: Using sprockets-rails 3.2.1
remote: Using coffee-rails 4.2.2
remote: Using responders 2.4.0
remote: Fetching dotenv-rails 2.5.0
remote: Installing carrierwave 1.2.3
remote: Installing dotenv-rails 2.5.0
remote: Using jquery-rails 4.3.3
remote: Using jquery-ui-rails 5.0.5
remote: Using rails 5.2.2
remote: Using sass-rails 5.0.7
remote: Using devise 4.5.0
remote: Fetching aws-sdk-kms 1.13.0
remote: Installing aws-sdk-kms 1.13.0
remote: Fetching aws-sdk-s3 1.30.0
remote: Installing aws-sdk-s3 1.30.0
remote: Fetching carrierwave-aws 1.3.0
remote: Installing carrierwave-aws 1.3.0
remote: Bundle complete! 28 Gemfile dependencies, 91 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 (5.98s)
remote: Cleaning up the bundler cache.
remote: Warning: the running version of Bundler (1.15.2) is older than the version that created the lockfile (1.17.1). We suggest you upgrade to the latest version of Bundler by running `gem install bundler`.
remote: The latest bundler is 2.0.0.pre.2, but you are currently running 1.15.2.
remote: To update, run `gem install bundler --pre`
remote: -----> Installing node-v8.10.0-linux-x64
remote: -----> Detecting rake tasks
remote: -----> Preparing app for Rails asset pipeline
remote: Running: rake assets:precompile
remote: rake aborted!
remote: KeyError: key not found: "S3_BUCKET_NAME"
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/config/initializers/carrierwave.rb:3:in `fetch'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/config/initializers/carrierwave.rb:3:in `block in <main>'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/carrierwave-1.2.3/lib/carrierwave/uploader/configuration.rb:161:in `configure'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/carrierwave-1.2.3/lib/carrierwave.rb:14:in `configure'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/config/initializers/carrierwave.rb:1:in `<main>'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:50:in `load'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:50:in `load'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:285:in `block in load'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:257:in `load_dependency'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:285:in `load'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:657:in `block in load_config_initializer'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/notifications.rb:170:in `instrument'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:656:in `load_config_initializer'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:614:in `block (2 levels) in <class:Engine>'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:613:in `each'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:613:in `block in <class:Engine>'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:32:in `instance_exec'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:32:in `run'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:61:in `block in run_initializers'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:50:in `each'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:50:in `tsort_each_child'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:60:in `run_initializers'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/application.rb:361:in `initialize!'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/config/environment.rb:5:in `<main>'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `block in require'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:257:in `load_dependency'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `require'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/application.rb:337:in `require_environment!'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/application.rb:520:in `block in run_tasks_blocks'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/sprockets-rails-3.2.1/lib/sprockets/rails/task.rb:62:in `block (2 levels) in define'
remote: /tmp/build_bed53da6969ae50aa98632527d1504c6/vendor/bundle/ruby/2.5.0/gems/rake-12.3.2/exe/rake:27:in `<top (required)>'
remote: Tasks: TOP => environment
remote: (See full trace by running task with --trace)
remote:
remote: !
remote: ! Precompiling assets failed.
remote: !
remote: ! Push rejected, failed to compile Ruby app.
remote:
remote: ! Push failed
remote: Verifying deploy...
remote:
remote: ! Push rejected to sohel-p-portfolio.
remote:
To https://git.heroku.com/sohel-p-portfolio.git
heroku记录最后一行：
2018-12-18T19:49:24.000000+00:00 app[api]: Build failed -- check your build logs
答案 0 :(得分：1)
您可以使用...在Heroku上手动设置env变量。
$ heroku config:set S3_BUCKET_NAME=yourbucketname