I'm using angular universal V6 and express server. When I run webpack as compiler of server.ts to server.js, it shows me these errors that I have no idea what to do with!! Can you please help me to fix it!! Ignoring nyi function for these kind of error or something better.

ERROR Error: NotYetImplemented at Document.exports.nyi (webpack-internal:///./node_modules/domino/lib/utils.js:41:9) at CookieService.check (webpack-internal:///./node_modules/ngx-cookie-service/cookie-service/cookie.service.js:31:48) at CookieService.get (webpack-internal:///./node_modules/ngx-cookie-service/cookie-service/cookie.service.js:36:47) at ChatySystemComponent../src/app/chaty-system/chaty-system.component.ts.ChatySystemComponent.ngOnInit (webpack-internal:///./dist/server/main.js:1371:40) at checkAndUpdateDirectiveInline (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:9217:19) at checkAndUpdateNodeInline (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10481:20) at checkAndUpdateNode (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10443:16) at prodCheckAndUpdateNode (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10983:5) at Object.eval [as updateDirectives] (webpack-internal:///./dist/server/main.js:341:1857) at Object.updateDirectives (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10772:72) at checkAndUpdateView (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10425:14) at callViewAction (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10666:21) at execComponentViewsAction (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10608:13) at Object.checkAndUpdateView (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10431:5) at ViewRef_.detectChanges (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:8812:22) at eval (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:4701:63) at Array.forEach (<anonymous>) at ApplicationRef.tick (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:4701:25) at ApplicationRef._loadComponent (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:4735:14) at ApplicationRef.bootstrap (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:4677:14) at eval (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:4477:81) at Array.forEach (<anonymous>) ERROR { Error: Uncaught (in promise): Error: NotYetImplemented Error: NotYetImplemented at Document.exports.nyi (webpack-internal:///./node_modules/domino/lib/utils.js:41:9) at CookieService.check (webpack-internal:///./node_modules/ngx-cookie-service/cookie-service/cookie.service.js:31:48) at CookieService.get (webpack-internal:///./node_modules/ngx-cookie-service/cookie-service/cookie.service.js:36:47) at new DateFormatterByTimezonePipe (webpack-internal:///./dist/server/main.js:9099:53) at createClass (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:9268:20) at createPipeInstance (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:9147:12) at createViewNodes (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10366:32) at callViewAction (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10689:13) at execComponentViewsAction (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10608:13) at createViewNodes (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10401:5) at createRootView (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10287:5) at Object.createProdRootView [as createRootView] (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:10799:12) at ComponentFactory_.create (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:8633:29) at ComponentFactoryBoundToModule.create (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:3452:29) at ViewContainerRef_.createComponent (webpack-internal:///./node_modules/@angular/core/fesm5/core.js:8743:45) at RouterOutlet.activateWith (webpack-internal:///./node_modules/@angular/router/fesm5/router.js:4658:40) at ActivateRoutes.activateRoutes (webpack-internal:///./node_modules/@angular/router/fesm5/router.js:4003:40) at eval (webpack-internal:///./node_modules/@angular/router/fesm5/router.js:3955:19)