Add check to breadcrumbs check when layout-content is available

src/components/hy-breadcrumbs/hy-breadcrumbs.tsx

@@ -44,10 +44,11 @@ export class HyBreadcrumbs {
     breadcrumbsWidth = this.el.offsetWidth + 64;
     const layoutContentElement = document.getElementsByClassName('layout-content')[0] as HTMLElement;
     const moreButton = document.querySelectorAll('.breadcrumb-item-dropdown-button')[0];
-
-    if (breadcrumbsWidth >= layoutContentElement.offsetWidth) {
-      moreButton.setAttribute('aria-hidden', 'false');
-      this.adjustBreadcrumbsMenuVisibility();
+    if (layoutContentElement) {
+      if (breadcrumbsWidth >= layoutContentElement.offsetWidth) {
+        moreButton.setAttribute('aria-hidden', 'false');
+        this.adjustBreadcrumbsMenuVisibility();
+      }
     }
   }