Thanks @Damian Gemza

Commenting out that line did resolve the error. Thank you for your assistance.

Dear @D Smith

You shouldn't import window from ng-uikit-pro-standard, because this class is not prepared for use by our users.

Remove this import and your application should be working fine.

Best Regards,

Damian

NodeJS version: 10.16.0
Angular version (global): 8.0.4

snippet from package.json:

"dependencies": {
"@angular/animations": "^7.2.3",
"@angular/common": "^7.2.3",
"@angular/compiler": "^7.2.3",
"@angular/core": "^7.2.3",
"@angular/forms": "^7.2.3",
"@angular/http": "^7.2.3",
"@angular/platform-browser": "^7.2.3",
"@angular/platform-browser-dynamic": "^7.2.3",
"@angular/router": "^7.2.3",
"@types/chart.js": "^2.7.31",
"angular5-csv": "^0.2.10",
"chart.js": "^2.5.0",
"core-js": "^2.5.4",
"easy-pie-chart": "^2.1.7",
"font-awesome": "^4.7.0",
"hammerjs": "^2.0.8",
"moment": "^2.22.2",
"ng-uikit-pro-standard": "git+https://oauth2:{OUR TOKEN}@git.mdbootstrap.com/mdb/angular/ng-uikit-pro-standard.git",
"ngx-clipboard": "^11.1.3",
"rxjs": "^6.2.2",
"screenfull": "^3.3.0",
"zone.js": "~0.8.26"
},

snippet from weeklyvalidation.component.ts:

import { Component, OnInit , ViewChild, ElementRef, Compiler } from '@angular/core';
import {NgForm} from '@angular/forms';
//MODEL
import { WDVAbove } from '../Model/WeeklyDataValidation/Above.model';
import { WDVDpeCU } from '../Model/WeeklyDataValidation/DpeCu.model';
import { WDVDpeExcp } from '../Model/WeeklyDataValidation/DpeExcp';
import { WDVTammit } from '../Model/WeeklyDataValidation/Tammit.model';
import { Analysis } from '../Model/WeeklyDataValidation/Analysis.model';
import { ValidationSESDR } from '../Model/Validation/ValidationSESDR.model';
import { ValidationISM } from '../Model/Validation/ValidationISM.model';
import { ValidationEXCPComparasion } from '../Model/Validation /ValidationEXCPComparasion.model';
import { ValidationDPEEXCP } from '../Model/Validation/ValidationDPEEXCP.model';
import { ValidationUpdates } from '../Model/Validation/ValidationUpdates.model';
import { WeeklyvalidationService } from '../Services/weeklyvalidation.service';
import { ValidationctrlService } from '../Controllers/validationctrl.service';
import { IfStmt } from '@angular/compiler';
import { window } from 'ng-uikit-pro-standard'; ERROR IS COMING FROM HERE
import { ValidationSCORECU } from '../Model/Validation/ValidationSCORECU.model';
import { ValidationAnalysis } from '../Model/Validation/ValidationAnalysis.model';