fanguangjiandeMacBook-Air:blog-1 fanguangjian$ npm run dev

> blog-1@1.0.0 dev /Users/fanguangjian/Desktop/Node.js/blog-1
> cross-env NODE_ENV=dev nodemon ./bin/www.js

module.js:550
    throw err;
    ^

Error: Cannot find module 'nice-try'
    at Function.Module._resolveFilename (module.js:548:15)
    at Function.Module._load (module.js:475:25)
    at Module.require (module.js:597:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/fanguangjian/Desktop/Node.js/blog-1/node_modules/_cross-spawn@6.0.5@cross-spawn/lib/parse.js:4:17)
    at Module._compile (module.js:653:30)
    at Object.Module._extensions..js (module.js:664:10)
    at Module.load (module.js:566:32)
    at tryModuleLoad (module.js:506:12)
    at Function.Module._load (module.js:498:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! blog-1@1.0.0 dev: `cross-env NODE_ENV=dev nodemon ./bin/www.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the blog-1@1.0.0 dev script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.