Fixed:

- $object_data['actor'] can be null, but Receiver::getReceivers()'s 2nd
  parameter expect it to be string

diff --git a/src/Protocol/ActivityPub/Receiver.php b/src/Protocol/ActivityPub/Receiver.php
index fe16256f07c3407a41273c9a0177f55761f2fc32..e8c9ac8f7ba3cdc6bfd3190b53b7d30dc3429a1c 100644 (file)
--- a/src/Protocol/ActivityPub/Receiver.php
+++ b/src/Protocol/ActivityPub/Receiver.php
@@ -1768,7 +1768,7 @@ class Receiver
                        $object_data['question'] = self::processQuestion($object);
                }
 
-               $receiverdata = self::getReceivers($object, $object_data['actor'], $object_data['tags'], true);
+               $receiverdata = self::getReceivers($object, $object_data['actor'] ?? '', $object_data['tags'], true);
                $receivers = $reception_types = [];
                foreach ($receiverdata as $key => $data) {
                        $receivers[$key] = $data['uid'];