Angular 角度类型错误（'；readdirp:root参数必须是字符串。'；）

我有一个非常好的angular应用程序在我的笔记本电脑上运行，然后我决定将后端移动到独立的位置，从那时起，

ng serve

抛出以下错误。它似乎通过了编译ok，然后从

readdirp

抛出一个错误-有人知道发生了什么吗

Date: 2020-05-19T19:20:23.850Z - Hash: d2eb790e660ef9dbe323 - Time: 10777ms
** Angular Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **
: Compiled successfully.
C:\__FILES\xxx\xxx\xxx\xxx\node_modules\chokidar\node_modules\readdirp\index.js:252
    throw new TypeError('readdirp: root argument must be a string. Usage: readdirp(root, options)');
    ^

谷歌似乎对此不太了解。我已将我的npm软件包更新到所有内容的最新版本。以下是我的package.json，以备不时之需：

  "dependencies": {
    "@angular/animations": "^9.1.7",
    "@angular/common": "^9.1.7",
    "@angular/compiler": "^9.1.7",
    "@angular/core": "^9.1.7",
    "@angular/elements": "^9.1.7",
    "@angular/forms": "^9.1.7",
    "@angular/platform-browser": "^9.1.7",
    "@angular/platform-browser-dynamic": "^9.1.7",
    "@angular/router": "^9.1.7",
    "@mapbox/tilebelt": "^1.0.1",
    "@types/geojson": "^7946.0.7",
    "@types/google.visualization": "0.0.52",
    "@types/mapbox-gl": "^1.10.1",
    "babel-runtime": "^6.26.0",
    "bootstrap": "^4.5.0",
    "core-js": "^3.6.5",
    "document-register-element": "^1.7.2",
    "jquery": "^3.5.1",
    "mapbox-gl": "^1.10.1",
    "nodemon": "^2.0.4",
    "popper": "^1.0.1",
    "rxjs": "^6.5.5",
    "tslib": "^2.0.0",
    "typescript": "^3.6.5",
    "zone.js": "^0.10.3"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.901.6",
    "@angular/cli": "^9.1.6",
    "@angular/compiler-cli": "^9.1.7",
    "@angular/language-service": "^9.1.7",
    "@types/jasmine": "^3.5.10",
    "@types/jasminewd2": "~2.0.8",
    "@types/node": "^14.0.3",
    "codelyzer": "^5.2.2",
    "jasmine-core": "~3.5.0",
    "jasmine-spec-reporter": "^5.0.2",
    "karma": "^5.0.8",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage-istanbul-reporter": "^3.0.2",
    "karma-jasmine": "^3.1.1",
    "karma-jasmine-html-reporter": "^1.5.4",
    "protractor": "^7.0.0",
    "ts-node": "^8.10.1",
    "tslint": "^6.1.2"
  }

编辑：

---

如果我构建并提供它，没有问题，并且似乎通过了开发编译ok。那么，与开发应用程序的服务有关吗？

@Radik的方法是正确的。我删除了

node\u模块

，

package.json

和

package lock.json

，从我删除后端并进行

npm安装之前的
package.json中取出了一个旧的
package.json
。与上次一样，我没有从
package.json中删除我不需要的行，这次我在每个包上卸载了
npm
，并在每个包之后运行
ng serve
，以确保它仍然工作。然后我运行了
npm-outleted
，并使用
npm-install更新了每个包xxx@latest
。最后我做了
npm-prune
。我不能说是哪一步解决了这个问题，但它现在工作正常。
删除
node\u modules
文件夹并执行
npm I
它可能会重现错误。您可以尝试从版本中删除插入符号（^），并重新安装依赖项—可能您在最新修补程序版本中发现了一些错误