总是有如下的报错信息，其他的报错信息好像出不来，不如写入json文件时候，路径其实不对的错误

[dev:build] 10:53:16 - Found 0 errors. Watching for file changes.
[dev:start] [nodemon] restarting due to changes…
[dev:start] [nodemon] starting node node ./dist/index.js
[dev:start] events.js:187
[dev:start] throw er; // Unhandled ‘error’ event
[dev:start] ^
[dev:start]
[dev:start] Error: listen EADDRINUSE: address already in use :::7001
[dev:start] at Server.setupListenHandle [as _listen2] (net.js:1301:14)
[dev:start] at listenInCluster (net.js:1349:12)
[dev:start] at Server.listen (net.js:1437:7)
[dev:start] at Function.listen (/Users/wangxin/source/typescript/dell-ts/ts-crawler-2/node_modules/express/lib/application.js:618:24)
[dev:start] at Object. (/Users/wangxin/source/typescript/dell-ts/ts-crawler-2/dist/index.js:25:5)
[dev:start] at Module._compile (internal/modules/cjs/loader.js:959:30)
[dev:start] at Object.Module._extensions…js (internal/modules/cjs/loader.js:995:10)
[dev:start] at Module.load (internal/modules/cjs/loader.js:815:32)
[dev:start] at Function.Module._load (internal/modules/cjs/loader.js:727:14)
[dev:start] at Function.Module.runMain (internal/modules/cjs/loader.js:1047:10)
[dev:start] Emitted ‘error’ event on Server instance at:
[dev:start] at emitErrorNT (net.js:1328:8)
[dev:start] at processTicksAndRejections (internal/process/task_queues.js:80:21) {
[dev:start] code: ‘EADDRINUSE’,
[dev:start] errno: ‘EADDRINUSE’,
[dev:start] syscall: ‘listen’,
[dev:start] address: ‘::’,
[dev:start] port: 7001
[dev:start] }
[dev:start] [nodemon] app crashed - waiting for file changes before starting…