我正在尝试使用Beanstalk将现有的heroku应用程序部署到EC2。
到目前为止，我已经移除了所有环境变量以及数据库设置等。除了Puma之外，它似乎正常工作和部署。
puma.log文件一遍又一遍地包含以下内容;
/opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/pathname.rb:397:in `initialize': no implicit conversion of nil into String (TypeError)
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/pathname.rb:397:in `new'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/pathname.rb:397:in `join'
from /var/app/current/config/initializers/cloudfront-signer.rb:2:in `block in <top (required)>'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/cloudfront-signer-2.2.0/lib/cloudfront-signer.rb:108:in `configure'
from /var/app/current/config/initializers/cloudfront-signer.rb:1:in `<top (required)>'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `block in load'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:240:in `load_dependency'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/engine.rb:652:in `block in load_config_initializer'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/notifications.rb:166:in `instrument'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/engine.rb:651:in `load_config_initializer'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/engine.rb:616:in `block (2 levels) in <class:Engine>'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/engine.rb:615:in `each'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/engine.rb:615:in `block in <class:Engine>'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:30:in `instance_exec'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:30:in `run'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:55:in `block in run_initializers'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:226:in `block in tsort_each'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:420:in `block (2 levels) in each_strongly_connected_component_from'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:429:in `each_strongly_connected_component_from'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:419:in `block in each_strongly_connected_component_from'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:44:in `each'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:44:in `tsort_each_child'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:413:in `call'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:413:in `each_strongly_connected_component_from'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:347:in `block in each_strongly_connected_component'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:345:in `each'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:345:in `call'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:345:in `each_strongly_connected_component'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:224:in `tsort_each'
from /opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/tsort.rb:203:in `tsort_each'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:54:in `run_initializers'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/application.rb:352:in `initialize!'
from /var/app/current/config/environment.rb:5:in `<top (required)>'
from config.ru:3:in `require'
from config.ru:3:in `block in <main>'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in `instance_eval'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in `initialize'
from config.ru:in `new'
from config.ru:in `<main>'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in `eval'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in `new_from_string'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:40:in `parse_file'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/configuration.rb:102:in `load_rackup'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/configuration.rb:69:in `app'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/runner.rb:123:in `app'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/runner.rb:130:in `start_server'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/cluster.rb:213:in `worker'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/cluster.rb:109:in `block (2 levels) in spawn_workers'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/cluster.rb:109:in `fork'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/cluster.rb:109:in `block in spawn_workers'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/cluster.rb:105:in `times'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/cluster.rb:105:in `spawn_workers'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/cluster.rb:157:in `check_workers'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/cluster.rb:421:in `run'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/lib/puma/cli.rb:216:in `run'
from /opt/rubies/ruby-2.2.2/lib/ruby/gems/2.2.0/gems/puma-2.11.2/bin/puma:10:in `<top (required)>'
from /opt/rubies/ruby-2.2.2/bin/puma:23:in `load'
from /opt/rubies/ruby-2.2.2/bin/puma:23:in `<main>'
我不知道这是什么或为什么会发生这种情况并且完全失去了......
config/environment的第5行是Rails.application.initialize!
config.ru的第3行是run Rails.application
这是否意味着Rails.application尚未定义？我有点困惑。
此应用程序再次在Heroku上完美运行。
建议？