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Недавно я обновил свой угловой проект с 4->6, и он компилируется, но я получаю ошибку >Ошибка неперехваченного типа: WEBPACK_ИМПОРТИРОВАННЫЙ_МОДУЛЬ_0__угловой_ядро.OpaqueToken не является конструктором при оценке (webpack-внутренний:///200:5) в объекте. (приложение. js:868) в webpack_require (polyfills.js:55)

Я провел глобальный поиск OpaqueToken, но нигде не могу найти его в своем коде. Как вы думаете, в чем причина этого?

пакет.json

 {
  "name": "printreef",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "private": true,
  "dependencies": {
    "@angular/animation": "4.0.0-beta.8",
    "@angular/animations": "6.1.10",
    "@angular/cli": "^6.2.9",
    "@angular/common": "6.1.10",
    "@angular/compiler": "6.1.10",
    "@angular/compiler-cli": "6.1.10",
    "@angular/core": "6.1.10",
    "@angular/forms": "6.1.10",
    "@angular/http": "6.1.10",
    "@angular/platform-browser": "6.1.10",
    "@angular/platform-browser-dynamic": "6.1.10",
    "@angular/platform-server": "6.1.10",
    "@angular/router": "6.1.10",
    "@material/select": "^10.0.0",
    "@ng-bootstrap/ng-bootstrap": "^1.0.0-alpha.28",
    "@toverux/ngsweetalert2": "1.2.2",
    "@types/jquery": "^3.5.5",
    "@types/jspdf": "1.1.31",
    "@types/node": "16.3.2",
    "@types/underscore": "1.8.1",
    "angular-2-dropdown-multiselect": "1.9.0",
    "angular-google-recaptcha": "^1.0.3",
    "angular-l10n": "3.4.1",
    "angular2-image-upload": "0.6.6",
    "angular2-jwt": "0.2.3",
    "angular2-moment": "^1.9.0",
    "angular2-social-auth": "3.0.3",
    "angular2-swiper": "0.8.1",
    "bootstrap": "4.0.0-alpha.6",
    "bootstrap-select": "^1.13.18",
    "currency-symbol-map": "4.0.2",
    "drag-drop-webkit-mobile": "1.4.1",
    "flow-bin": "0.81.0",
    "flow-typed": "2.5.1",
    "jquery": "^3.5.1",
    "jspdf": "1.3.5",
    "jspdf-autotable": "2.3.2",
    "md-select": "0.0.1-alpha.1",
    "moment": "^2.24.0",
    "ng-custom-select": "^2.0.4",
    "ng2-dnd": "4.2.0",
    "ng2-file-upload": "1.2.1",
    "ng2-page-scroll": "^4.0.0-beta.12",
    "ngx-cookie": "3.0.1",
    "ngx-gallery": "5.3.1",
    "ngx-infinite-scroll": "0.5.2",
    "ngx-mydatepicker": "2.1.5",
    "ngx-owl-carousel-o": "0.1.2",
    "ngx-password-toggle": "^1.0.3",
    "ngx-phone-mask": "2.1.3",
    "ngx-sharebuttons": "3.0.0",
    "ngx-siema": "2.0.0",
    "ngx-toastr": "10.2.0",
    "ngx-uploader": "^11.0.0",
    "rxjs-compat": "^6.6.7",
    "save": "^2.4.0",
    "sweetalert2": "6.9.1",
    "to-string-loader": "1.1.5",
    "typescript": "4.1.3",
    "typings": "2.1.1",
    "underscore": "1.8.3",
    "yarn": "1.7.0",
    "yarn.lock": "0.0.1-security"
  },
  "devDependencies": {
    "angular2-template-loader": "0.6.2",
    "awesome-typescript-loader": "3.2.1",
    "copy-webpack-plugin": "4.0.1",
    "core-js": "2.4.1",
    "css-loader": "0.28.4",
    "es6-shim": "0.35.3",
    "extract-text-webpack-plugin": "3.0.0",
    "file-loader": "0.11.2",
    "html-loader": "0.4.5",
    "html-webpack-plugin": "2.29.0",
    "json-loader": "0.5.4",
    "nib": "1.1.2",
    "node-sass": "^4.14.1",
    "package.json": "2.0.1",
    "postcss-loader": "2.0.6",
    "pug": "^2.0.4",
    "pug-html-loader": "1.1.5",
    "pug-loader": "2.3.0",
    "raw-loader": "0.5.1",
    "resolve-url-loader": "2.1.0",
    "rxjs": "6.6.7",
    "sass-loader": "6.0.6",
    "schema-utils": "0.3.0",
    "stylus": "0.54.5",
    "stylus-loader": "3.0.1",
    "ts-loader": "2.2.2",
    "tslint": "5.5.0",
    "tslint-loader": "3.5.3",
    "uglifyjs-webpack-plugin": "0.4.6",
    "webpack": "3.12.0",
    "webpack-dev-server": "2.11.2",
    "webpack-merge": "4.1.0",
    "zone.js": "~0.8.26"
  },
  "scripts": {
    "start": "yarn run server:dev",
    "compile": "webpack --config config/webpack.production.js --display-error-details",
    "server:dev": "webpack-dev-server -d --config config/webpack.dev.js  --content-base src/ --host 0.0.0.0 --port 9000",
    "postinstall": "typings install"
  }
}