我正在嘗試學習反應，所以我有這個示例代碼為fullstack反應投票應用程序，我試圖讓它工作，但在運行npm install后跟npm start我收到以下錯誤：npm ERR! Darwin 16.4.0npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "server"npm ERR! node v7.5.0npm ERR! npm  v4.3.0npm ERR! file shnpm ERR! code ELIFECYCLEnpm ERR! errno ENOENTnpm ERR! syscall spawnnpm ERR! voting_app@1.1.0 server: `live-server --public --    host=localhost --port=3000 --middleware=./disable-browser-cache.js`npm ERR! spawn ENOENTnpm ERR!npm ERR! Failed at the voting_app@1.1.0 server script 'live-server --public --host=localhost --port=3000 --middleware=./disable-browser- cache.js'.npm ERR! Make sure you have the latest version of node.js and npm  installed.npm ERR! If you do, this is most likely a problem with the voting_app  package,npm ERR! not with npm itself.npm ERR! Tell the author that this fails on your system:npm ERR!     live-server --public --host=localhost --port=3000 --  middleware=./disable-browser-cache.jsnpm ERR! You can get information on how to open an issue for this  project with:npm ERR!     npm bugs voting_appnpm ERR! Or if that isn't available, you can get their info via:npm ERR!     npm owner ls voting_appnpm ERR! There is likely additional logging output above.npm ERR! Please include the following file with any support request:npm ERR!     /Users/ItsMeMrLi/.npm/_logs/2017-02-17T22_48_03_581Z-debug.lognpm ERR! Darwin 16.4.0npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "start"npm ERR! node v7.5.0npm ERR! npm  v4.3.0npm ERR! code ELIFECYCLEnpm ERR! errno 1npm ERR! voting_app@1.1.0 start: `npm run server`npm ERR! Exit status 1npm ERR!npm ERR! Failed at the voting_app@1.1.0 start script 'npm run server'.npm ERR! Make sure you have the latest version of node.js and npm installed.npm ERR! If you do, this is most likely a problem with the voting_app    package,npm ERR! not with npm itself.npm ERR! Tell the author that this fails on your system:npm ERR!     npm run server