这是因为您正在使用webmock 。它将阻止所有出站HTTP请求。

It's because you are using webmock. It blocks all outbound HTTP requests.

如果您不需要它，请将其从Gemfile中删除。如果确实需要它，那么您可能需要对其进行更精确的配置以满足您的需要：

If you don't need it, remove it from the Gemfile. If you do need it, then you may need to configure it more precisely to your needs:

https://github.com/bblimke/webmock