From 607d26e90676a8ab9a6a824aba9918753a61109d Mon Sep 17 00:00:00 2001
From: Hypolite Petovan <hypolite@mrpetovan.com>
Date: Wed, 7 Dec 2022 22:35:37 -0500
Subject: [PATCH] Ward against empty JsonLD::fetchElement result in
 ActivityPub\Receiver::processTags

- Address https://github.com/friendica/friendica/issues/12011#issuecomment-1336478368
---
 src/Protocol/ActivityPub/Receiver.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Protocol/ActivityPub/Receiver.php b/src/Protocol/ActivityPub/Receiver.php
index 4e2bcceaf..893982274 100644
--- a/src/Protocol/ActivityPub/Receiver.php
+++ b/src/Protocol/ActivityPub/Receiver.php
@@ -209,7 +209,7 @@ class Receiver
 				Logger::notice('No object data found', ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'actor' => $actor, 'activity' => $activity]);
 				return;
 			}
-	
+
 			if (self::routeActivities($object_data, $type, true)) {
 				Logger::debug('Handled activity', ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'actor' => $actor]);
 			} else {
@@ -1472,7 +1472,7 @@ class Receiver
 				continue;
 			}
 
-			$element = ['type' => str_replace('as:', '', JsonLD::fetchElement($tag, '@type')),
+			$element = ['type' => str_replace('as:', '', JsonLD::fetchElement($tag, '@type') ?? ''),
 				'href' => JsonLD::fetchElement($tag, 'as:href', '@id'),
 				'name' => JsonLD::fetchElement($tag, 'as:name', '@value')];