ERROR: Error installing rails zeitwerk requires Ruby version >= 2.4.4

Question

I recently changed my laptop and tried installing rails with

gem install rails

and I got this error

ERROR:  Error installing rails:
    zeitwerk requires Ruby version >= 2.4.4.

I have installed ruby version 2.4.4, 2.5.7, and 2.6.5 and I'm still getting the same error. Any pointers how to resolve this will be greatly appreciated. thanks

Answer 1

In directory wanted use rvm use ruby-2.5.7 command line to force the usage of this specific version of ruby and after gem install rails . Just tryed minutes ago and works fine

Answer 2

如果您不关心拥有较新版本的 Ruby（和rails ），则此特定问题的另一种解决方法，您只需安装最新兼容版本的rails与您的 ruby​​ 版本，类似的示例与需要ruby v2.5.0 sprockets ruby v2.5.0通过安装旧版本的rails v4.1.16查看依赖关系图解决：

sudo gem install rails -v 4.1.16