diff --git a/projects/common/src/fm/components/side-panel/side-panel.component.ts b/projects/common/src/fm/components/side-panel/side-panel.component.ts
index e8e27a7..e3b13ed 100644
--- a/projects/common/src/fm/components/side-panel/side-panel.component.ts
+++ b/projects/common/src/fm/components/side-panel/side-panel.component.ts
@@ -13,7 +13,7 @@ export class SidePanelComponent  implements OnChanges {
   @Input() public collapsable: boolean;
   @Input() public resizeable = false;
   @Input() public left = false;
-  @Input() public extrawide = false;
+  @Input() public extrawide: boolean;
   @Output() onResize: EventEmitter<number> = new EventEmitter<number>();
   @ViewChild("resizeGrip") elementView: ElementRef;
   public mobile = true;
@@ -42,7 +42,7 @@ export class SidePanelComponent  implements OnChanges {
   }
 
   ngAfterViewInit() {
-    this.parentHeight = this.element.nativeElement.offsetParent.clientHeight;
+    this.parentHeight = this.element.nativeElement.offsetParent?.clientHeight;
     this.setTop();
   }