From a2b181972174d9e03839ba75950e9f504cfc47f5 Mon Sep 17 00:00:00 2001
From: Michael <heluecht@pirati.ca>
Date: Thu, 17 Jun 2021 18:48:23 +0000
Subject: [PATCH] Fix notice "Undefined index: url in
 .../src/Protocol/ActivityPub/Transmitter.php on line 611"

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

diff --git a/src/Protocol/ActivityPub/Transmitter.php b/src/Protocol/ActivityPub/Transmitter.php
index 3e6b130a33..8bfc00a862 100644
--- a/src/Protocol/ActivityPub/Transmitter.php
+++ b/src/Protocol/ActivityPub/Transmitter.php
@@ -608,7 +608,7 @@ class Transmitter
 							// But comments to forums aren't directed to the followers collection
 							// This rule is only valid when the actor isn't the forum.
 							// The forum needs to transmit their content to their followers.
-							if (($profile['type'] == 'Group') && ($profile['url'] != $actor_profile['url'])) {
+							if (($profile['type'] == 'Group') && ($profile['url'] != ($actor_profile['url'] ?? ''))) {
 								$data['to'][] = $profile['url'];
 							} else {
 								$data['cc'][] = $profile['url'];