Fixed #3907

src/Ombi/ClientApp/src/app/usermanagement/usermanagement.component.html

@@ -7,7 +7,7 @@
     <button type="button" style="float:right;" mat-raised-button color="primary" (click)="showBulkEdit = !showBulkEdit" [disabled]="this.selection.selected.length <= 0">Bulk Edit</button>
 
   </div>
-  <div class="content">
+  <div class="content" >
       <table mat-table *ngIf="dataSource" [dataSource]="dataSource" matSort class="mat-elevation-z8">
 
         <ng-container matColumnDef="select">

src/Ombi/ClientApp/src/app/usermanagement/usermanagement.component.ts

@@ -10,7 +10,7 @@ import { SelectionModel } from "@angular/cdk/collections";
     templateUrl: "./usermanagement.component.html",
     styleUrls: ["./usermanagement.component.scss"],
 })
-export class UserManagementComponent implements OnInit, AfterViewInit {
+export class UserManagementComponent implements OnInit {
 
     public displayedColumns: string[] = ['select', 'username', 'alias', 'email', 'roles', 'remainingRequests',
         'nextRequestDue', 'lastLoggedIn', 'userType', 'actions', 'welcome'];
@@ -32,13 +32,15 @@ export class UserManagementComponent implements OnInit, AfterViewInit {
     constructor(private identityService: IdentityService,
         private settingsService: SettingsService,
         private notificationService: NotificationService,
-        private plexSettings: SettingsService) { }
+        private plexSettings: SettingsService) {
+            this.dataSource = new MatTableDataSource();
+         }
 
 
     public async ngOnInit() {
         this.users = await this.identityService.getUsers().toPromise();
-
         this.dataSource = new MatTableDataSource(this.users);
+        this.dataSource.sort = this.sort;
 
         this.plexSettings.getPlex().subscribe(x => this.plexEnabled = x.enable);
 
@@ -47,10 +49,6 @@ export class UserManagementComponent implements OnInit, AfterViewInit {
         this.settingsService.getEmailNotificationSettings().subscribe(x => this.emailSettings = x);
     }
 
-    public ngAfterViewInit(): void {
-        this.dataSource.sort = this.sort;
-    }
-
     public welcomeEmail(user: IUser) {
         if (!user.emailAddress) {
             this.notificationService.error("The user needs an email address.");
@@ -103,6 +101,9 @@ export class UserManagementComponent implements OnInit, AfterViewInit {
     }
 
     public isAllSelected() {
+        if (!this.dataSource) {
+            return;
+        }
         const numSelected = this.selection.selected.length;
         const numRows = this.dataSource.data.length;
         return numSelected === numRows;
@@ -110,6 +111,9 @@ export class UserManagementComponent implements OnInit, AfterViewInit {
 
 
     public masterToggle() {
+        if (!this.dataSource) {
+            return;
+        }
         this.isAllSelected() ?
             this.selection.clear() :
             this.dataSource.data.forEach(row => this.selection.select(row));