npm run protractor 出现一下错误，求解啊！

Question

Error: No selenium server jar found at the specified location (C:\www\angular-phonecat\node_modules\protractor\selenium\selenium-server-standalone-2.47.1.jar). Check that the version number is up to date.    at LocalDriverProvider.addDefaultBinaryLocs_ (C:\www\angular-phonecat\node_modules\protractor\lib\driverProviders\local.js:37:11)    at LocalDriverProvider.setupEnv (C:\www\angular-phonecat\node_modules\protractor\lib\driverProviders\local.js:71:8)    at Runner.run (C:\www\angular-phonecat\node_modules\protractor\lib\runner.js:261:31)    at TaskRunner.run (C:\www\angular-phonecat\node_modules\protractor\lib\taskRunner.js:123:19)    at createNextTaskRunner (C:\www\angular-phonecat\node_modules\protractor\lib\launcher.js:223:20)    at C:\www\angular-phonecat\node_modules\protractor\lib\launcher.js:246:7    at _fulfilled (C:\www\angular-phonecat\node_modules\protractor\node_modules\q\q.js:797:54)    at self.promiseDispatch.done (C:\www\angular-phonecat\node_modules\protractor\node_modules\q\q.js:826:30)    at Promise.promise.promiseDispatch (C:\www\angular-phonecat\node_modules\protractor\node_modules\q\q.js:759:13)    at C:\www\angular-phonecat\node_modules\protractor\node_modules\q\q.js:573:44npm ERR! Windows_NT 6.1.7601npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "run" "protractor"npm ERR! node v4.3.0npm ERR! npm  v2.14.12npm ERR! code ELIFECYCLEnpm ERR! angular-phonecat@0.0.0 protractor: `protractor test/protractor-conf.js`npm ERR! Exit status 1npm ERR! npm ERR! Failed at the angular-phonecat@0.0.0 protractor script 'protractor test/protractor-conf.js'.npm ERR! This is most likely a problem with the angular-phonecat package,npm ERR! not with npm itself.npm ERR! Tell the author that this fails on your system:npm ERR!     protractor test/protractor-conf.jsnpm ERR! You can get their info via:npm ERR!     npm owner ls angular-phonecatnpm ERR! There is likely additional logging output above.npm ERR! Please include the following file with any support request:npm ERR!     C:\www\angular-phonecat\npm-debug.log

Answer 1

Error: No selenium server jar found at the specified location