From a4531aefe3f0cc9f687626db765abf84b9122a5e Mon Sep 17 00:00:00 2001
From: JeroenT <jeroent@2228934.no-reply.drupal.org>
Date: Mon, 26 Apr 2021 13:51:44 +0000
Subject: [PATCH] Update UriExtractor.php

---
 src/UriExtractor.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/UriExtractor.php b/src/UriExtractor.php
index f8fe577..a79903b 100644
--- a/src/UriExtractor.php
+++ b/src/UriExtractor.php
@@ -43,11 +43,12 @@ class UriExtractor {
       return self::getUriFromEntity($input);
     }
     elseif ($input instanceof EntityReferenceFieldItemListInterface) {
-      if ($item = $input->first()) {
+      $item = $input->first();
+      if (!empty($item) && $input->entity instanceof ContentEntityInterface) {
         return $this->getUriFromEntity($item->entity);
       }
     }
-    elseif ($input instanceof EntityReferenceItem) {
+    elseif ($input instanceof EntityReferenceItem && $input->entity instanceof ContentEntityInterface) {
       return self::getUriFromEntity($input->entity);
     }
     return NULL;