昨天运行良好，我不知道npm发生了什么，而是开始出现上述错误，所以没有启动。 请帮助我。
npm启动脚本不起作用，请有人帮助我，我是这个领域的新手
Husnains-Mini:~ husnaintahir$ cd ReactApp
Husnains-Mini:ReactApp husnaintahir$ cd react-complete-guide
Husnains-Mini:react-complete-guide husnaintahir$ npm start
> react-complete-guide@0.1.0 st art /Users/husnaintahir/ReactApp/react-complete-guide
> node scripts/start.js
module.js:549
throw err;
^
Error: Cannot find module '../config/env'
at Function.Module._resolveFilename (module.js:547:15)
at Function.Module._load (module.js:474:25)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (/Users/husnaintahir/ReactApp/react-complete-guide/scripts/start.js:15:1)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! react-complete-guide@0.1.0 start: `node scripts/start.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the react-complete-guide@0.1.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/husnaintahir/.npm/_logs/2019-05-22T04_42_05_832Z-debug.log
Husnains-Mini:react-complete-guide husnaintahir$