![Gem::InstallError: rack 需要 Ruby 版本 >= 2.2.2](https://linux22.com/image/1148728/Gem%3A%3AInstallError%3A%20rack%20%E9%9C%80%E8%A6%81%20Ruby%20%E7%89%88%E6%9C%AC%20%3E%3D%202.2.2.png)
我正在安装 Bundle
thulehoang@thulehoang-X455LAB:~/workspace/hello_app$ bundle install
,但是它不起作用。
这是错误:
Gem::InstallError: rack requires Ruby version >= 2.2.2.
An error occurred while installing rack (2.0.3), and Bundler cannot continue.
Make sure that gem install rack -v '2.0.3' succeeds before bundling.