Question

尝试运行rails应用时，我收到以下错误

rails s -p 5000
    /home/user/.rvm/gems/ruby-2.1.6/gems/tlsmail-0.0.1/lib/net/smtp.rb:806: warning: already initialized constant Net::SMTPSession
    /home/user/.rvm/gems/ruby-2.1.6/gems/tlsmail-0.0.1/lib/net/smtp.rb:806: warning: previous definition of SMTPSession was here
    /home/user/.rvm/gems/ruby-2.1.6/gems/tlsmail-0.0.1/lib/net/pop.rb:687: warning: already initialized constant Net::POP
    /home/user/.rvm/gems/ruby-2.1.6/gems/tlsmail-0.0.1/lib/net/pop.rb:687: warning: previous definition of POP was here
    /home/user/.rvm/gems/ruby-2.1.6/gems/tlsmail-0.0.1/lib/net/pop.rb:688: warning: already initialized constant Net::POPSession
    /home/user/.rvm/gems/ruby-2.1.6/gems/tlsmail-0.0.1/lib/net/pop.rb:688: warning: previous definition of POPSession was here
    /home/user/.rvm/gems/ruby-2.1.6/gems/tlsmail-0.0.1/lib/net/pop.rb:689: warning: already initialized constant Net::POP3Session
    /home/user/.rvm/gems/ruby-2.1.6/gems/tlsmail-0.0.1/lib/net/pop.rb:689: warning: previous definition of POP3Session was here
    /home/user/.rvm/gems/ruby-2.1.6/gems/tlsmail-0.0.1/lib/net/pop.rb:702: warning: already initialized constant Net::APOPSession
    /home/user/.rvm/gems/ruby-2.1.6/gems/tlsmail-0.0.1/lib/net/pop.rb:702: warning: previous definition of APOPSession was here
    /home/user/.rvm/gems/ruby-2.1.6/gems/bundler-1.11.2/lib/bundler/runtime.rb:80:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'activeadmin'. (Bundler::GemRequireError)

什么原因导致捆绑包中出现Gem Require错误？

Answer 1

您似乎已安装/加载了多个版本的gem tlsmail。这就是原因，你得到它已被初始化的警告。你可以做的是运行：

 gem list --local | grep 'tlsmail'

将返回已安装的gem版本列表。然后你可以删除其中一个版本（根据项目的依赖关系），看看是否有效。

gem uninstall tlsmail -v <version>

您可能还想检查Gemfile中是否有不同版本的宝石。

希望有所帮助！

Answer 2

我希望它尝试加载activeadmin

可能是activeadmin中的问题

检查gemfile和安装

  gem 'activeadmin'

使用此命令安装activeadmin：Active admin install with Rails 4

Answer 3

您是否初始化了宝石集？（因为你正在使用RVM）

在运行服务器

之前，按如下方式初始化gemset

rvm use ruby-2.3.0@rails425

用您的ruby版本和gemset名称替换ruby的版本和gemset的名称。

尝试运行rails应用程序时Bundler :: GemRequireError

3 个答案: