Fixed Target page if schema preview fails
<ng-container *ngIf="!showCatalog && dataSets && dataSets.length >0 ">
<mat-list dense>
<mat-list-item *ngFor="let dataset of dataSets; let last=last">
- <h4 mat-line>{{dataset.dataSource.title}}</h4>
+ <h4 mat-line>{{dataset.dataSource ? dataset.dataSource.title : ""}}</h4>
<p mat-line>{{dataset.resolvePath()}}</p>
<button mat-icon-button color="accent" (click)="browseCatalog()" *ngIf="!feed.readonly && allowEdit" matTooltip="Choose a different sample"><mat-icon>edit</mat-icon></button>
</mat-list-item>
