From a8eabae12fd8e54c6b16fd6f306640701b8dae23 Mon Sep 17 00:00:00 2001
From: Hypolite Petovan <hypolite@mrpetovan.com>
Date: Wed, 23 Nov 2022 10:40:41 -0500
Subject: [PATCH] Ensure $owner is set in ActivityPub\Transmitter::sendActivity

- Address https://github.com/friendica/friendica/issues/11993#issuecomment-1322704863
---
 src/Protocol/ActivityPub/Transmitter.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Protocol/ActivityPub/Transmitter.php b/src/Protocol/ActivityPub/Transmitter.php
index 1d71e93337..e540cc2a90 100644
--- a/src/Protocol/ActivityPub/Transmitter.php
+++ b/src/Protocol/ActivityPub/Transmitter.php
@@ -2031,6 +2031,10 @@ class Transmitter
 		}
 
 		$owner = User::getOwnerDataById($uid);
+		if (empty($owner)) {
+			Logger::warning('No user found for actor, aborting', ['uid' => $uid]);
+			return false;
+		}
 
 		if (empty($id)) {
 			$id = DI::baseUrl() . '/activity/' . System::createGUID();