Fix warnings in Receiver.php

diff --git a/src/Protocol/ActivityPub/Receiver.php b/src/Protocol/ActivityPub/Receiver.php
index 12fd91b7cf61978647fe5f55116e356296d61325..e31b8fb3d6eb3f28586ad2e46e1fe4427f3e0a5e 100644 (file)
--- a/src/Protocol/ActivityPub/Receiver.php
+++ b/src/Protocol/ActivityPub/Receiver.php
@@ -1896,8 +1896,14 @@ class Receiver
                }
 
                $object_data['unlisted'] = in_array(-1, $object_data['receiver']);
-               unset($object_data['receiver'][-1]);
-               unset($object_data['reception_type'][-1]);
+
+               if (array_key_exists(-1, $object_data['receiver'])) {
+                       unset($object_data['receiver'][-1]);
+               }
+
+               if (array_key_exists(-1, $object_data['reception_type'])) {
+                       unset($object_data['reception_type'][-1]);
+               }
 
                return $object_data;
        }