之前有人问过这个错误，但我在这里尝试了所有答案，但没有一个有效。
我正在尝试将 AWS s3 连接到导轨：
我在这个问题的底部粘贴了错误。
载波.rb：
CarrierWave.configure do |config|
config.fog_provider = 'fog/aws' # required
config.fog_credentials = {
provider: 'AWS', # required
aws_access_key_id: ENV['AWS_ACCESS_KEY_ID'], # required
aws_secret_access_key: ENV['AWS_SECRET_ACCESS_KEY'], # required
region: ENV['AWS_REGION'], # optional, defaults to 'us-east-1'
}
config.fog_directory = 'discoveredfmyelpdemo' # required
config.fog_public = false # optional, defaults to true
config.fog_attributes = { 'Cache-Control' => "max-age=#{365.day.to_i}" } # optional, defaults to {}
end
我将 figaro 用于成功安装并创建 application.yml 的环境变量（注意哈希是为了掩盖密钥，但在文件中是正确的）：
AWS_ACCESS_KEY_ID: "A########################SA"
AWS_SECRET_ACCESS_KEY: "ba####################st"
AWS_REGION: "Sydney"
development:
AWS_BUCKET: discoveredfmyelpdemo
production:
AWS_BUCKET: discoveredfmyelpdemo
我不知道为什么这会影响它，但以防万一我会给你我的 gem 和上传器相关的文件内容（我是 ROR 的新手）。
Avatar_Uploader.rb：
class AvatarUploader < CarrierWave::Uploader::Base
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
end
宝石文件：
gem "fog-aws"
gem 'carrierwave', github: 'carrierwaveuploader/carrierwave'
gem 'figaro', '1.0'
这是完整的错误：
=> Booting WEBrick
=> Rails 4.2.5 application starting in development on http://0.0.0.0:8080
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
Exiting
/usr/local/rvm/gems/ruby-2.3.0/gems/fog-core-1.38.0/lib/fog/core/service.rb:244:in `validate_options': Missing required arguments: aws_access_key_id, aws_secret_access_key (ArgumentError)
from /usr/local/rvm/gems/ruby-2.3.0/gems/fog-core-1.38.0/lib/fog/core/service.rb:268:in `handle_settings'
from /usr/local/rvm/gems/ruby-2.3.0/gems/fog-core-1.38.0/lib/fog/core/service.rb:98:in `new'
from /usr/local/rvm/gems/ruby-2.3.0/gems/fog-core-1.38.0/lib/fog/core/services_mixin.rb:16:in `new'
from /usr/local/rvm/gems/ruby-2.3.0/gems/fog-core-1.38.0/lib/fog/storage.rb:27:in `new'
from /usr/local/rvm/gems/ruby-2.3.0/bundler/gems/carrierwave-98d73a935047/lib/carrierwave/uploader/configuration.rb:123:in `eager_load_fog'
from /usr/local/rvm/gems/ruby-2.3.0/bundler/gems/carrierwave-98d73a935047/lib/carrierwave/uploader/configuration.rb:136:in `fog_credentials='
from /home/ubuntu/workspace/config/initializers/fog.rb:2:in `block in <top (required)>'
from /usr/local/rvm/gems/ruby-2.3.0/bundler/gems/carrierwave-98d73a935047/lib/carrierwave/uploader/configuration.rb:158:in `configure'
from /usr/local/rvm/gems/ruby-2.3.0/bundler/gems/carrierwave-98d73a935047/lib/carrierwave.rb:14:in `configure'
from /home/ubuntu/workspace/config/initializers/fog.rb:1:in `<top (required)>'
from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:in `load'
from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:in `block in load'
from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:240:in `load_dependency'
from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:in `load'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:652:in `block in load_config_initializer'
from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.5/lib/active_support/notifications.rb:166:in `instrument'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:651:in `load_config_initializer'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:616:in `block (2 levels) in <class:Engine>'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:615:in `each'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:615:in `block in <class:Engine>'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:30:in `instance_exec'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:30:in `run'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:55:in `block in run_initializers'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:228:in `block in tsort_each'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:422:in `block (2 levels) in each_strongly_connected_component_from'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:431:in `each_strongly_connected_component_from'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:421:in `block in each_strongly_connected_component_from'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:44:in `each'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:44:in `tsort_each_child'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:415:in `call'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:415:in `each_strongly_connected_component_from'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:349:in `block in each_strongly_connected_component'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:347:in `each'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:347:in `call'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:347:in `each_strongly_connected_component'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:226:in `tsort_each'
from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:205:in `tsort_each'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:54:in `run_initializers'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/application.rb:352:in `initialize!'
from /home/ubuntu/workspace/config/environment.rb:5:in `<top (required)>'
from /home/ubuntu/workspace/config.ru:3:in `require'
from /home/ubuntu/workspace/config.ru:3:in `block in <main>'
from /usr/local/rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in `instance_eval'
from /usr/local/rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in `initialize'
from /home/ubuntu/workspace/config.ru:in `new'
from /home/ubuntu/workspace/config.ru:in `<main>'
from /usr/local/rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in `eval'
from /usr/local/rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in `new_from_string'
from /usr/local/rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/builder.rb:40:in `parse_file'
from /usr/local/rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/server.rb:299:in `build_app_and_options_from_config'
from /usr/local/rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/server.rb:208:in `app'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/commands/server.rb:61:in `app'
from /usr/local/rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/server.rb:336:in `wrapped_app'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/commands/server.rb:139:in `log_to_stdout'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/commands/server.rb:78:in `start'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:80:in `block in server'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:75:in `tap'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:75:in `server'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.5/lib/rails/commands.rb:17:in `<top (required)>'
from /home/ubuntu/workspace/bin/rails:9:in `require'
from /home/ubuntu/workspace/bin/rails:9:in `<top (required)>'
from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/client/rails.rb:28:in `load'
from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/client/rails.rb:28:in `call'
from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/client/command.rb:7:in `call'
from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/client.rb:30:in `run'
from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.1/bin/spring:49:in `<top (required)>'
from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/binstub.rb:11:in `load'
from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/binstub.rb:11:in `<top (required)>'
from /home/ubuntu/workspace/bin/spring:13:in `require'
from /home/ubuntu/workspace/bin/spring:13:in `<top (required)>'
from bin/rails:3:in `load'
from bin/rails:3:in `<main>'
谢谢你的帮助。