rails web

Question

我新建了一个rails项目，执行完bundle后，用rails s 启动项目的时候报了:

You're using Rubygems 1.8.23 with Spring. Upgrade to at least Rubygems 2.1.0 and run `gem pristine --all` for better startup performance.

Could not find erubis-2.7.0 in any of the sources

Run `bundle install` to install missing gems.

请问需要修改哪?