From 67f186749a4d9ff18e0d26f77ab6ed2bdde0fb36 Mon Sep 17 00:00:00 2001
From: Dominik Kohler <18621527+kohlerdominik@users.noreply.github.com>
Date: Mon, 7 Feb 2022 19:13:45 +0100
Subject: [PATCH] Fixed Undefined Key error in nested relationship

---
 src/BaseRelation.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/BaseRelation.php b/src/BaseRelation.php
index 3b3b592..6d8cdb9 100644
--- a/src/BaseRelation.php
+++ b/src/BaseRelation.php
@@ -158,7 +158,7 @@ public function addEagerConstraints(array $models)
         // The first model in the array is always the parent, so add the scope constraints based on that model.
         // @link https://github.com/laravel/framework/pull/25240
         // @link https://github.com/lazychaser/laravel-nestedset/issues/351
-        optional($models[0])->applyNestedSetScope($this->query);
+        optional(reset($models))->applyNestedSetScope($this->query);
 
         $this->query->whereNested(function (Builder $inner) use ($models) {
             // We will use this query in order to apply constraints to the