diff --git a/ui-ngx/src/app/modules/home/pages/dashboard/dashboard-form.component.ts b/ui-ngx/src/app/modules/home/pages/dashboard/dashboard-form.component.ts
index eca7b61dcc..844e0822a1 100644
--- a/ui-ngx/src/app/modules/home/pages/dashboard/dashboard-form.component.ts
+++ b/ui-ngx/src/app/modules/home/pages/dashboard/dashboard-form.component.ts
@@ -31,7 +31,7 @@ import { DashboardService } from '@core/http/dashboard.service';
 import { EntityTableConfig } from '@home/models/entity/entities-table-config.models';
 import { isEqual } from '@core/utils';
 import { EntityType } from '@shared/models/entity-type.models';
-import {PageLink} from "@shared/models/page/page-link";
+import { PageLink } from "@shared/models/page/page-link";
 
 @Component({
   selector: 'tb-dashboard-form',
@@ -118,7 +118,7 @@ export class DashboardFormComponent extends EntityComponent<Dashboard, PageLink,
 
   onPublicLinkCopied($event) {
     this.store.dispatch(new ActionNotificationShow(
-     {
+      {
         message: this.translate.instant('dashboard.public-link-copied-message'),
         type: 'success',
         duration: 750,
diff --git a/ui-ngx/src/app/modules/home/pages/dashboard/dashboards-table-config.resolver.ts b/ui-ngx/src/app/modules/home/pages/dashboard/dashboards-table-config.resolver.ts
index fe16cc60c9..fec3f2b398 100644
--- a/ui-ngx/src/app/modules/home/pages/dashboard/dashboards-table-config.resolver.ts
+++ b/ui-ngx/src/app/modules/home/pages/dashboard/dashboards-table-config.resolver.ts
@@ -14,9 +14,9 @@
 /// limitations under the License.
 ///
 
-import {Injectable} from '@angular/core';
+import { Injectable } from '@angular/core';
 
-import {ActivatedRouteSnapshot, Router} from '@angular/router';
+import { ActivatedRouteSnapshot, Router } from '@angular/router';
 import {
   CellActionDescriptor,
   checkBoxCell,
@@ -26,20 +26,20 @@ import {
   GroupActionDescriptor,
   HeaderActionDescriptor
 } from '@home/models/entity/entities-table-config.models';
-import {TranslateService} from '@ngx-translate/core';
-import {DatePipe} from '@angular/common';
-import {EntityType, entityTypeResources, entityTypeTranslations} from '@shared/models/entity-type.models';
-import {EntityAction} from '@home/models/entity/entity-component.models';
-import {forkJoin, Observable, of} from 'rxjs';
-import {select, Store} from '@ngrx/store';
-import {selectAuthUser} from '@core/auth/auth.selectors';
-import {map, mergeMap, take, tap} from 'rxjs/operators';
-import {AppState} from '@core/core.state';
-import {Authority} from '@app/shared/models/authority.enum';
-import {CustomerService} from '@core/http/customer.service';
-import {Customer} from '@app/shared/models/customer.model';
-import {MatDialog} from '@angular/material/dialog';
-import {DialogService} from '@core/services/dialog.service';
+import { TranslateService } from '@ngx-translate/core';
+import { DatePipe } from '@angular/common';
+import { EntityType, entityTypeResources, entityTypeTranslations } from '@shared/models/entity-type.models';
+import { EntityAction } from '@home/models/entity/entity-component.models';
+import { forkJoin, Observable, of } from 'rxjs';
+import { select, Store } from '@ngrx/store';
+import { selectAuthUser } from '@core/auth/auth.selectors';
+import { map, mergeMap, take, tap } from 'rxjs/operators';
+import { AppState } from '@core/core.state';
+import { Authority } from '@app/shared/models/authority.enum';
+import { CustomerService } from '@core/http/customer.service';
+import { Customer } from '@app/shared/models/customer.model';
+import { MatDialog } from '@angular/material/dialog';
+import { DialogService } from '@core/services/dialog.service';
 import {
   AddEntitiesToCustomerDialogComponent,
   AddEntitiesToCustomerDialogData
@@ -52,8 +52,8 @@ import {
   isCurrentPublicDashboardCustomer,
   isPublicDashboard
 } from '@app/shared/models/dashboard.models';
-import {DashboardService} from '@app/core/http/dashboard.service';
-import {DashboardFormComponent} from '@modules/home/pages/dashboard/dashboard-form.component';
+import { DashboardService } from '@app/core/http/dashboard.service';
+import { DashboardFormComponent } from '@modules/home/pages/dashboard/dashboard-form.component';
 import {
   ManageDashboardCustomersActionType,
   ManageDashboardCustomersDialogComponent,
@@ -63,16 +63,16 @@ import {
   MakeDashboardPublicDialogComponent,
   MakeDashboardPublicDialogData
 } from '@modules/home/pages/dashboard/make-dashboard-public-dialog.component';
-import {DashboardTabsComponent} from '@home/pages/dashboard/dashboard-tabs.component';
-import {ImportExportService} from '@shared/import-export/import-export.service';
-import {EdgeService} from '@core/http/edge.service';
+import { DashboardTabsComponent } from '@home/pages/dashboard/dashboard-tabs.component';
+import { ImportExportService } from '@shared/import-export/import-export.service';
+import { EdgeService } from '@core/http/edge.service';
 import {
   AddEntitiesToEdgeDialogComponent,
   AddEntitiesToEdgeDialogData
 } from '@home/dialogs/add-entities-to-edge-dialog.component';
-import {HomeDialogsService} from '@home/dialogs/home-dialogs.service';
-import {Widget} from '@shared/models/widget.models';
-import {EntityAliases} from '@shared/models/alias.models';
+import { HomeDialogsService } from '@home/dialogs/home-dialogs.service';
+import { Widget } from '@shared/models/widget.models';
+import { EntityAliases } from '@shared/models/alias.models';
 import {
   EntityAliasesDialogComponent,
   EntityAliasesDialogData
@@ -81,7 +81,7 @@ import {
   DashboardInfoDialogData,
   ImportDashboardFileDialogComponent
 } from "@home/pages/dashboard/import-dashboard-file-dialog.component";
-import {PageLink} from "@shared/models/page/page-link";
+import { PageLink } from "@shared/models/page/page-link";
 
 @Injectable()
 export class DashboardsTableConfigResolver {
diff --git a/ui-ngx/src/app/modules/home/pages/dashboard/import-dashboard-file-dialog.component.ts b/ui-ngx/src/app/modules/home/pages/dashboard/import-dashboard-file-dialog.component.ts
index fda1662f46..26238655a0 100644
--- a/ui-ngx/src/app/modules/home/pages/dashboard/import-dashboard-file-dialog.component.ts
+++ b/ui-ngx/src/app/modules/home/pages/dashboard/import-dashboard-file-dialog.component.ts
@@ -14,17 +14,16 @@
 /// limitations under the License.
 ///
 
-import {Component, Inject, OnInit} from '@angular/core';
-import {MAT_DIALOG_DATA, MatDialogRef} from '@angular/material/dialog';
-import {Store} from '@ngrx/store';
-import {AppState} from '@core/core.state';
-import {UntypedFormBuilder, UntypedFormGroup} from '@angular/forms';
-import {DashboardService} from '@core/http/dashboard.service';
-import {Dashboard, DashboardInfo} from '@app/shared/models/dashboard.models';
-import {ActionNotificationShow} from '@core/notification/notification.actions';
-import {TranslateService} from '@ngx-translate/core';
-import {DialogComponent} from '@shared/components/dialog.component';
-import {Router} from '@angular/router';
+import { Component, Inject, OnInit } from '@angular/core';
+import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
+import { Store } from '@ngrx/store';
+import { AppState } from '@core/core.state';
+import { FormBuilder, FormGroup } from '@angular/forms';
+import { DashboardService } from '@core/http/dashboard.service';
+import { Dashboard } from '@app/shared/models/dashboard.models';
+import { ActionNotificationShow } from '@core/notification/notification.actions';
+import { DialogComponent } from '@shared/components/dialog.component';
+import { Router } from '@angular/router';
 
 export interface DashboardInfoDialogData {
   dashboard: Dashboard;
@@ -37,17 +36,16 @@ export interface DashboardInfoDialogData {
 })
 export class ImportDashboardFileDialogComponent extends DialogComponent<ImportDashboardFileDialogComponent> implements OnInit {
 
-  dashboard: Dashboard;
+  private dashboard: Dashboard;
   currentFileName: string = '';
-  uploadFileFormGroup: UntypedFormGroup;
+  uploadFileFormGroup: FormGroup;
 
   constructor(protected store: Store<AppState>,
               protected router: Router,
               @Inject(MAT_DIALOG_DATA) public data: DashboardInfoDialogData,
-              public translate: TranslateService,
               private dashboardService: DashboardService,
-              public dialogRef: MatDialogRef<ImportDashboardFileDialogComponent>,
-              public fb: UntypedFormBuilder) {
+              protected dialogRef: MatDialogRef<ImportDashboardFileDialogComponent>,
+              public fb: FormBuilder) {
     super(store, router, dialogRef);
     this.dashboard = data.dashboard;
   }
@@ -62,9 +60,9 @@ export class ImportDashboardFileDialogComponent extends DialogComponent<ImportDa
     this.dialogRef.close();
   }
 
-  save(){
+  save() {
     const fileControl = this.uploadFileFormGroup.get('file');
-    if(!fileControl || !fileControl.value){
+    if (!fileControl || !fileControl.value) {
       return;
     }
 
@@ -74,7 +72,7 @@ export class ImportDashboardFileDialogComponent extends DialogComponent<ImportDa
     };
     this.dashboard.configuration = dashboardContent;
 
-    this.dashboardService.saveDashboard(this.dashboard).subscribe(()=>{
+    this.dashboardService.saveDashboard(this.dashboard).subscribe(() => {
       this.dialogRef.close(true);
     })
   }
diff --git a/ui-ngx/src/app/shared/models/dashboard.models.ts b/ui-ngx/src/app/shared/models/dashboard.models.ts
index acd7e63b68..8fe92f1b80 100644
--- a/ui-ngx/src/app/shared/models/dashboard.models.ts
+++ b/ui-ngx/src/app/shared/models/dashboard.models.ts
@@ -195,7 +195,6 @@ export interface Dashboard extends DashboardInfo {
   configuration?: DashboardConfiguration;
   dialogRef?: MatDialogRef<any>;
   resources?: Array<any>;
-  fileContent?: DashboardConfiguration;
 }
 
 export interface HomeDashboard extends Dashboard {