From b6e52f66c90bd0b1c8c7d5e005186b63433b390a Mon Sep 17 00:00:00 2001
From: Bohdan <bliba@felmo.de>
Date: Mon, 26 Oct 2020 16:36:13 +0100
Subject: [PATCH] Added condition for nullable polymorphic relation

---
 src/Illuminate/Database/Eloquent/Model.php | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/Illuminate/Database/Eloquent/Model.php b/src/Illuminate/Database/Eloquent/Model.php
index 1d7362deb058..32508d85564e 100644
--- a/src/Illuminate/Database/Eloquent/Model.php
+++ b/src/Illuminate/Database/Eloquent/Model.php
@@ -516,6 +516,10 @@ public function load($relations)
      */
     public function loadMorph($relation, $relations)
     {
+        if (!$this->{$relation}) {
+            return $this;
+        }
+        
         $className = get_class($this->{$relation});
 
         $this->{$relation}->load($relations[$className] ?? []);
@@ -562,6 +566,10 @@ public function loadCount($relations)
      */
     public function loadMorphCount($relation, $relations)
     {
+        if (!$this->{$relation}) {
+            return $this;
+        }
+
         $className = get_class($this->{$relation});
 
         $this->{$relation}->loadCount($relations[$className] ?? []);