Edit error message: room could not be found

src/app/creator-room/creator-room.component.html

@@ -31,6 +31,6 @@
         </button>
       </mat-card-actions>
     </mat-card>
-    <div *ngIf="!isLoading && !room">Error</div>
+    <div *ngIf="!isLoading && !room">Error: room could not be found!</div>
   </div>
 </div>