Unhandled Promise rejection by Zone.js Error in Angular7

[jaykhatriwebdesigner]

Error:
Unhandled Promise rejection: Cannot redefine property: prototype ; Zone: ; Task: Promise.then ; Value: TypeError: Cannot redefine property: prototype
at defineProperty ()
at _tryDefineProperty (zone-evergreen.js:2230)
at Function.Object.defineProperty (zone-evergreen.js:2180)
at Extender.Set (angular-maps.js:2784)
at Extender.Extend (angular-maps.js:2763)
at MixinMapLabelWithOverlayView$1 (angular-maps.js:5008)
at angular-maps.js:14557
at ZoneDelegate.invoke (zone-evergreen.js:359)
at Zone.run (zone-evergreen.js:124)
at zone-evergreen.js:855 TypeError: Cannot redefine property: prototype
at defineProperty ()
at _tryDefineProperty (http://localhost:4200/polyfills.js:8308:16)
at Function.Object.defineProperty (http://localhost:4200/polyfills.js:8258:16)
at Extender.Set (http://localhost:4200/vendor.js:165005:16)
at Extender.Extend (http://localhost:4200/vendor.js:164984:14)
at MixinMapLabelWithOverlayView$1 (http://localhost:4200/vendor.js:167229:10)
at http://localhost:4200/vendor.js:176778:13
at ZoneDelegate.invoke (http://localhost:4200/polyfills.js:6437:26)
at Zone.run (http://localhost:4200/polyfills.js:6202:43)
at http://localhost:4200/polyfills.js:6933:36

Here is my package which i am using

{
"name": "frontend",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular/animations": "~8.2.7",
"@angular/cdk": "~8.2.3",
"@angular/common": "~8.2.7",
"@angular/compiler": "~8.2.7",
"@angular/core": "~8.2.7",
"@angular/forms": "~8.2.7",
"@angular/material": "^8.2.3",
"@angular/platform-browser": "~8.2.7",
"@angular/platform-browser-dynamic": "~8.2.7",
"@angular/router": "~8.2.7",
"@ng-bootstrap/ng-bootstrap": "^5.1.1",
"core-js": "2.5.5",
"zone.js": "~0.9.1",
"bingmaps": "2.0.3",
"angular-maps": "^6.0.3",
"hammerjs": "^2.0.8",
"jquery": "^3.4.1",
"rxjs": "~6.4.0",
"tslib": "^1.10.0"
},
"devDependencies": {
"@angular-devkit/build-angular": "~0.803.5",
"@angular/cli": "~8.3.5",
"@angular/compiler-cli": "~8.2.7",
"@angular/language-service": "~8.2.7",
"@types/node": "~8.9.4",
"@types/jasmine": "~3.3.8",
"@types/jasminewd2": "~2.0.3",
"codelyzer": "^5.0.0",
"jasmine-core": "~3.4.0",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~4.1.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~2.0.1",
"karma-jasmine-html-reporter": "^1.4.0",
"protractor": "~5.4.0",
"ts-node": "~7.0.0",
"tslint": "~5.15.0",
"typescript": "~3.5.3"
}
}

[thor-schueler]

Seems related to #110