错误NG6002:出现在NgModule.imports of <module>中，但无法解析为NgModule类

Question

我刚从8.2角更新到9度。

如果我禁用常春藤的话，一切都会很好，但是当它被启用时，我得到了很多似乎有点模糊的错误，至少我在搜索它的时候找不到任何结果。

我非常肯定，我已经完成了更新所需的一切，即更改了lazyloading以使用动态导入和固定的角度材料导入路径等。

我还将在这里包含我的package.json依赖项。

  "dependencies": {
    "@angular/animations": "^9.0.0",
    "@angular/cdk": "^9.0.0",
    "@angular/common": "^9.0.0",
    "@angular/compiler": "^9.0.0",
    "@angular/core": "^9.0.0",
    "@angular/fire": "^5.4.2",
    "@angular/flex-layout": "^9.0.0-beta.29",
    "@angular/forms": "^9.0.0",
    "@angular/http": "^7.2.15",
    "@angular/material": "^9.0.0",
    "@angular/material-moment-adapter": "^8.2.2",
    "@angular/platform-browser": "^9.0.0",
    "@angular/platform-browser-dynamic": "^9.0.0",
    "@angular/platform-server": "^9.0.0",
    "@angular/router": "^9.0.0",
    "@ngrx/effects": "^8.3.0",
    "@ngrx/entity": "^8.3.0",
    "@ngrx/router-store": "^8.3.0",
    "@ngrx/store": "^8.3.0",
    "@zxing/ngx-scanner": "^2.0.1",
    "angular-resizable-element": "^3.2.4",
    "angular-resize-event": "^1.1.1",
    "angular2-highcharts": "^0.5.5",
    "core-js": "^3.6.4",
    "detect-browser": "^4.7.0",
    "firebase": "^7.8.0",
    "google-polyline": "^1.0.3",
    "hammerjs": "^2.0.8",
    "highcharts": "^8.0.0",
    "i18n-iso-countries": "^4.3.1",
    "leaflet": "^1.5.1",
    "mapbox-gl": "^1.4.0",
    "moment": "^2.24.0",
    "moment-timezone": "^0.5.26",
    "ng-pick-datetime": "^6.0.7",
    "ngrx-store-freeze": "^0.2.3",
    "ngx-cacheable": "^1.3.2",
    "ngx-cookie-service": "^2.2.0",
    "ngx-csv": "^0.3.1",
    "ngx-file-drop": "^8.0.8",
    "ngx-infinite-scroll": "^0.8.4",
    "papaparse": "^5.0.2",
    "request": "^2.87.0",
    "request-promise": "^4.2.2",
    "rxjs": "^6.5.4",
    "rxjs-compat": "^6.3.3",
    "typescript-string-operations": "^1.3.1",
    "web-animations-js": "^2.3.2",
    "zone.js": "^0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.900.1",
    "@angular/cli": "^9.0.0",
    "@angular/compiler-cli": "^9.0.0",
    "@angular/language-service": "^9.0.0",
    "@ngrx/store-devtools": "^8.3.0",
    "@types/body-parser": "^1.17.0",
    "@types/cors": "^2.8.4",
    "@types/detect-browser": "^4.0.0",
    "@types/express": "^4.11.1",
    "@types/firebase": "^3.2.1",
    "@types/helmet": "0.0.37",
    "@types/jasmine": "^3.5.4",
    "@types/jasminewd2": "~2.0.3",
    "@types/leaflet": "^1.2.7",
    "@types/lodash": "^4.14.109",
    "@types/node": "^13.7.1",
    "@types/request": "^2.47.0",
    "@types/request-promise": "^4.1.41",
    "codelyzer": "^5.2.1",
    "concurrently": "^3.5.1",
    "del-cli": "^1.1.0",
    "jasmine-core": "^3.5.0",
    "jasmine-spec-reporter": "^4.2.1",
    "karma": "^4.4.1",
    "karma-chrome-launcher": "^3.1.0",
    "karma-cli": "^2.0.0",
    "karma-coverage-istanbul-reporter": "~1.4.2",
    "karma-jasmine": "^3.1.1",
    "karma-jasmine-html-reporter": "^1.5.2",
    "protractor": "^5.4.3",
    "puppeteer": "^2.0.0",
    "rxjs-tslint": "^0.1.7",
    "ts-node": "~5.0.1",
    "tslint": "^6.0.0",
    "typescript": "3.6.4",
    "webpack": "^4.41.6"
  },
  "peerDependencies": {
    "typescript": "3.6.4",
    "tslib": "1.10.0"
  },

以及我所犯的错误：

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我已经清除了我的node_modules和Packy-lock.json，并再次运行了npm安装。

编辑：也许注意到它正在用ng serve编译和运行也很重要，但是当我尝试构建它或使用AOT ng serve -aot运行时，我会得到错误。

Answer 1

我通过删除node_modules文件夹，然后运行npm install来解决这个问题。

Answer 2

我今天也面临着同样的问题，我是如何在我的场景中解决这个问题的。

可能与您无关，但错误是完全相同的，因此在这里记录。

我使用的是Linux，如果您对项目文件夹没有足够的权限，就会发生此错误。

sudo chmod -R 777 <folder>

一旦我给予了足够的权限，一切都很顺利，运行良好。

下面是我得到的错误的屏幕截图：

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Answer 3

通过在项目的根上执行以下命令，我修正了这个问题：

npx ngcc && ngcc -s dist