diff --git a/src/Forms/GridField/GridFieldDetailForm_ItemRequest.php b/src/Forms/GridField/GridFieldDetailForm_ItemRequest.php
index 9aab66baf..9db76aac0 100644
--- a/src/Forms/GridField/GridFieldDetailForm_ItemRequest.php
+++ b/src/Forms/GridField/GridFieldDetailForm_ItemRequest.php
@@ -464,8 +464,10 @@ class GridFieldDetailForm_ItemRequest extends RequestHandler
             if ($toplevelController->hasMethod('Backlink')) {
                 $backlink = $toplevelController->Backlink();
             } elseif ($this->popupController->hasMethod('Breadcrumbs')) {
-                $parents = $this->popupController->Breadcrumbs(false)->items;
-                $backlink = array_pop($parents)->Link;
+                $parents = $this->popupController->Breadcrumbs(false);
+                if ($parents && $parents = $parents->items) {
+                    $backlink = array_pop($parents)->Link;
+                }
             }
         }
         if (!$backlink) {
@@ -786,6 +788,10 @@ class GridFieldDetailForm_ItemRequest extends RequestHandler
         /** @var ArrayList $items */
         $items = $this->popupController->Breadcrumbs($unlinked);
 
+        if (!$items) {
+            $items = new ArrayList();
+        }
+
         if ($this->record && $this->record->ID) {
             $title = ($this->record->Title) ? $this->record->Title : "#{$this->record->ID}";
             $items->push(new ArrayData([