react-error-overlay@6.0.10 Error when hot update

Created by: gengfire

Uncaught ReferenceError: process is not defined at Object.4043 (:2:13168) at r (:2:306599) at Object.8048 (:2:9496) at r (:2:306599) at Object.8641 (:2:1379) at r (:2:306599) at :2:315627 at :2:324225 at :2:324229 at HTMLIFrameElement.e.onload (index.js:1:1)

1.npm install 2.npm run start 3.change some code