react-redux-starter-kit npm run devクラッシュ

Question

React/Reduxの新機能であり、反応還元スターターキット定型文を使用して掘り下げています。 npm run devはうまく働いていたが、今このエラーでクラッシュします

> express-react-redux-starter@1.0.0 dev /Users/unomas/Documents/web/suited-template 
> webpack-dev-server --config ./webpack/webpack-dev.config.js --watch --colors 

events.js:141 
     throw er; // Unhandled 'error' event 
    ^

Error: listen EADDRINUSE 127.0.0.1:3000 
    at Object.exports._errnoException (util.js:907:11) 
    at exports._exceptionWithHostPort (util.js:930:20) 
    at Server._listen2 (net.js:1250:14) 
    at listen (net.js:1286:10) 
    at net.js:1395:9 
    at GetAddrInfoReqWrap.asyncCallback [as callback] (dns.js:64:16) 
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:83:10) 

npm ERR! Darwin 14.5.0 
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "dev" 
npm ERR! node v4.5.0 
npm ERR! npm v2.15.9 
npm ERR! code ELIFECYCLE 
npm ERR! express-react-redux-starter@1.0.0 dev: `webpack-dev-server --config ./webpack/webpack-dev.config.js --watch --colors` 
npm ERR! Exit status 1 
npm ERR! 
npm ERR! Failed at the express-react-redux-starter@1.0.0 dev script 'webpack-dev-server --config ./webpack/webpack-dev.config.js --watch --colors'. 
npm ERR! This is most likely a problem with the express-react-redux-starter package, 
npm ERR! not with npm itself. 
npm ERR! Tell the author that this fails on your system: 
npm ERR!  webpack-dev-server --config ./webpack/webpack-dev.config.js --watch --colors 
npm ERR! You can get information on how to open an issue for this project with: 
npm ERR!  npm bugs express-react-redux-starter 
npm ERR! Or if that isn't available, you can get their info via: 
npm ERR! 
npm ERR!  npm owner ls express-react-redux-starter 
npm ERR! There is likely additional logging output above. 

npm ERR! Please include the following file with any support request: 
npm ERR!  /Users/unomas/Documents/web/suited-template/npm-debug.log 

NPM-debug.logに

0 info it worked if it ends with ok 
1 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', 'run', 'dev' ] 
2 info using npm@2.15.9 
3 info using node@v4.5.0 
4 verbose run-script [ 'predev', 'dev', 'postdev' ] 
5 info predev express-react-redux-starter@1.0.0 
6 info dev express-react-redux-starter@1.0.0 
7 verbose unsafe-perm in lifecycle true 
8 info express-react-redux-starter@1.0.0 Failed to exec dev script 
9 verbose stack Error: express-react-redux-starter@1.0.0 dev: `webpack-dev-server --config ./webpack/webpack-dev.config.js --watch --colors` 
9 verbose stack Exit status 1 
9 verbose stack  at EventEmitter.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/lifecycle.js:217:16) 
9 verbose stack  at emitTwo (events.js:87:13) 
9 verbose stack  at EventEmitter.emit (events.js:172:7) 
9 verbose stack  at ChildProcess.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/spawn.js:24:14) 
9 verbose stack  at emitTwo (events.js:87:13) 
9 verbose stack  at ChildProcess.emit (events.js:172:7) 
9 verbose stack  at maybeClose (internal/child_process.js:829:16) 
9 verbose stack  at Process.ChildProcess._handle.onexit (internal/child_process.js:211:5) 
10 verbose pkgid express-react-redux-starter@1.0.0 
11 verbose cwd /Users/unomas/Documents/web/suited-template 
12 error Darwin 14.5.0 
13 error argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "dev" 
14 error node v4.5.0 
15 error npm v2.15.9 
16 error code ELIFECYCLE 
17 error express-react-redux-starter@1.0.0 dev: `webpack-dev-server --config ./webpack/webpack-dev.config.js --watch --colors` 
17 error Exit status 1 
18 error Failed at the express-react-redux-starter@1.0.0 dev script 'webpack-dev-server --config ./webpack/webpack-dev.config.js --watch --colors'. 
18 error This is most likely a problem with the express-react-redux-starter package, 
18 error not with npm itself. 
18 error Tell the author that this fails on your system: 
18 error  webpack-dev-server --config ./webpack/webpack-dev.config.js --watch --colors 
18 error You can get information on how to open an issue for this project with: 
18 error  npm bugs express-react-redux-starter 
18 error Or if that isn't available, you can get their info via: 
18 error 
18 error  npm owner ls express-react-redux-starter 
18 error There is likely additional logging output above. 
19 verbose exit [ 1, true ] 

ない、誰もがこの定型またはエラーに精通しているか確認します。解決する方法を教えてください。 Thx

Answer 1

すでにlocalhost：3000で別のサーバーが実行されている可能性があります。ご覧になるにはブラウザでそれを押してみてください。

Answer 2

ウェブパックの設定に疲れた場合は、Chalet Starter Appを試してください。 create-react-appのようなコマンドを使ってアプリケーションをブートストラップし、フォルダ構造はreact-redux-starter-kitに基づいていました。詳細はQuick Overviewをご覧ください。別の質問がある場合は、問題を開くことを歓迎します。