无法创建RubyOnRails项目(由于错误，正在重试抓取器)

Question

我无法创建RubyOnRails项目。当我运行rails new miBlog时，我得到这样的结果：

         run  bundle install
Fetching source index from https://rubygems.org/

Retrying fetcher due to error (2/4): Bundler::Fetcher::CertificateFailureError Could not verify the SSL certificate for https://rubygems.org/.
There is a chance you are experiencing a man-in-the-middle attack, but most likely your system doesn't have the CA certificates needed for verification. For information about OpenSSL certificates, see http://bit.l/ruby-ssl. To connect without using SSL, edit your Gemfile sources and change 'https' to 'http'.
Retrying fetcher due to error (3/4): Bundler::Fetcher::CertificateFailureError Could not verify the SSL certificate for https://rubygems.org/.
There is a chance you are experiencing a man-in-the-middle attack, but most likely your system doesn't have the CA certificates needed for verification. For information about OpenSSL certificates, see http://bit.l/ruby-ssl. To connect without using SSL, edit your Gemfile sources and change 'https' to 'http'.
Retrying fetcher due to error (4/4): Bundler::Fetcher::CertificateFailureError Could not verify the SSL certificate for https://rubygems.org/.
There is a chance you are experiencing a man-in-the-middle attack, but most likely your system doesn't have the CA certificates needed for verification. For information about OpenSSL certificates, see http://bit.l/ruby-ssl. To connect without using SSL, edit your Gemfile sources and change 'https' to 'http'.
Could not verify the SSL certificate for https://rubygems.org/.
There is a chance you are experiencing a man-in-the-middle attack, but most
likely your system doesn't have the CA certificates needed for verification. For
information about OpenSSL certificates, see http://bit.l/ruby-ssl. To connect
without using SSL, edit your Gemfile sources and change 'https' to 'http'.

正如您所看到的，其中存在错误。

我有Rails 5.1.3和ruby 2.3.3p222。

如何修复这些错误，以便创建项目？

Answer 1

1. 使用最新版本的ruby，很可能在2.5到3.0之间
2. 检查OpenSSL是否安装在您的系统中
3. 检查命令行工具是否已安装，如果没有安装命令行工具
4. 检查命令行工具是否为最新，如果没有更新命令行工具

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