下面是package.json文件：

{
  "name": "lagouwang",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "babel-core": "^6.26.0",
    "babel-preset-env": "^1.6.1",
    "gulp": "^3.9.1",
    "gulp-babel": "^8.0.0-beta.2",
    "gulp-connect": "^5.5.0",
    "gulp-htmlmin": "^4.0.0",
    "gulp-plumber": "^1.2.0",
    "gulp-sass": "^3.1.0",
    "gulp-uglify": "^3.0.0"
  }
}

我已經(jīng)刪除過node_modules并重新init幾次了，每次都執(zhí)行g(shù)ulp任務(wù)都報(bào)下面這樣的錯(cuò)，一模一樣的錯(cuò)誤碼，請(qǐng)大神看看是什么原因呢？
module.js:471

throw err;
^

Error: Cannot find module '@babel/core'

at Function.Module._resolveFilename (module.js:469:15)
at Function.Module._load (module.js:417:25)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (D:\wamp\www\zzl2018\lagouwang\node_modules\_gulp-babel@8.0.0-beta.2@gulp-babel\index.js:7:15)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)

不管執(zhí)行g(shù)ulpfile.js內(nèi)什么任務(wù)都報(bào)這個(gè)錯(cuò)，把gulp-babel模塊的引用注釋掉就沒有報(bào)錯(cuò)了，gulp-babel我明明裝好了，包括bael-core、babel-preset-env都裝了