Bug I don't understand yet, yolo

diff --git a/src/purjolok.php b/src/purjolok.php
index 063d69e..2a0d366 100644 (file)
--- a/src/purjolok.php
+++ b/src/purjolok.php
@@ -24,7 +24,7 @@ function getBetween($content,$start){
     return '';
 }
 
-if ($between = getBetween(reveal($message), '[billid]')) {
+if ($between = getBetween(reveal($message ?? ''), '[billid]')) {
     $messages = array_values(array_filter(
         getMessagesFromInbox(
             getInbox(