Ruby on rails rake db：安装程序显示rake已中止！KeyError:找不到密钥："；URL“U主机”；错误_Ruby On Rails_Ruby_Ruby On Rails 3_Rubygems_Ruby On Rails 5

Ruby on rails rake db：安装程序显示rake已中止！KeyError:找不到密钥："；URL“U主机”；错误

ruby-on-rails ruby ruby-on-rails-3

Ruby on rails rake db：安装程序显示rake已中止！KeyError:找不到密钥："；URL“U主机”；错误,ruby-on-rails,ruby,ruby-on-rails-3,rubygems,ruby-on-rails-5,Ruby On Rails,Ruby,Ruby On Rails 3,Rubygems,Ruby On Rails 5,我有rails应用程序ubuntu 18.04。bundle安装运行成功，但当我运行rake db:setup时，它会显示雷克流产了！ KeyError:找不到密钥：“URL\U主机” /var/www/myapp/code/config/environments/production.rb:71:infetch' /var/www/myapp/code/config/environments/production.rb:71:inblock in' /home/myappuser/.rvm/

我有rails应用程序ubuntu 18.04。bundle安装运行成功，但当我运行rake db:setup时，它会显示

雷克流产了！ KeyError:找不到密钥：“URL\U主机” /var/www/myapp/code/config/environments/production.rb:71:in

fetch'
/var/www/myapp/code/config/environments/production.rb:71:in

block in' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/railtie.rb:210:in

instance\u eval'
/home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/railtie.rb:210:in

configure' /var/www/myapp/code/config/environments/production.rb:3:in

'
/home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active\u support/dependencies.rb:274:in

require' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active\u support/dependencies.rb:274:in

block in require'
/home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active\u support/dependency.rb:240:in

load\u dependency' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active\u support/dependencies.rb:274:in

require'
/home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/engine.rb:598:in

块（2层）in' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/engine.rb:597:in

each'
/home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/engine.rb:597:in

block in' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/initializable.rb:30:in

instance_exec'
/home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/initializable.rb:30:in

run' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/initializable.rb:55:in

block in run_initializer'
/home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/initializable.rb:44:in

each' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/initializable.rb:44:in

tsort_each_child'
/home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/initializable.rb:54:in

run_initializers' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/application.rb:352:in

initialize！'
/var/www/myapp/code/config/environment.rb:5:in

' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active\u support/dependencies.rb:274:in

require'
/home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active\u support/dependencies.rb:274:in

block in require' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active\u support/dependencies.rb:240:in

load\u dependencity'
/home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active\u support/dependencies.rb:274:in

require' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/application.rb:328:in

require\u环境！'
/home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/application.rb:457:in

block in run\u tasks\u blocks' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/rake-13.0.0/exe/rake:27:in

'
/home/myappuser/.rvm/gems/ruby-2.5.0/bin/ruby\u executable\u hooks:24:in

eval' /home/myappuser/.rvm/gems/ruby-2.5.0/bin/ruby\u可执行文件\u挂钩：24:in`' 任务：TOP=>db:setup=>db:schema:load\u if\u ruby=>environment （通过使用--trace运行任务查看完整跟踪）

需要帮助

似乎缺少URL\u主机的某些配置设置。

我们可以查看您的/var/www/myapp/code/config/environments/production.rb:71的内容吗。从显示的内容来看，您可能需要提供

URL\u HOST

环境变量