Could not find gem 'sqlite3 (>= 0) x64-mingw32' in any of the gem sources listed in your Gemfile

Could not find gem 'sqlite3 (>= 0) x64-mingw32' in any of the gem sources listed in your Gemfile or available on this machine.  

Run `bundle install` to install missing gems. 

在 windows下搭建Ruby Rails Web开发环境 时遇到这个问题，

出现此问题的原因是：没有安装sqlite3

安装sqlite3

执行命令：gem install sqlite3-ruby

C:\ruby>gem install sqlite3-ruby
Fetching: sqlite3-1.3.11-x64-mingw32.gem (100%)
Successfully installed sqlite3-1.3.11-x64-mingw32
Fetching: sqlite3-ruby-1.3.3.gem (100%)

#######################################################

Hello! The sqlite3-ruby gem has changed it's name to just sqlite3.  Rather than
installing `sqlite3-ruby`, you should install `sqlite3`.  Please update your
dependencies accordingly.

Thanks from the Ruby sqlite3 team!

<3 <3 <3 <3

#######################################################

Successfully installed sqlite3-ruby-1.3.3
Parsing documentation for sqlite3-1.3.11-x64-mingw32
Installing ri documentation for sqlite3-1.3.11-x64-mingw32
Parsing documentation for sqlite3-ruby-1.3.3
Installing ri documentation for sqlite3-ruby-1.3.3
Done installing documentation for sqlite3, sqlite3-ruby after 1 seconds
2 gems installed

安装过程中可能会出现以下问题：

Could not find gem 'sqlite3 (>= 0) x64-mingw32' in any of the gem sources listed in your Gemfile or available on this machine.  
Run `bundle install` to install missing gems. 
" port 443 (https://api.rubygems.org/quick/Marshal.4.8/sqlite3-ruby-1.3.3.gemspec.rz)

这可能是由于网络的原因，多试几次就好了。