diff --git a/src/Lib.php b/src/Lib.php
index 5516f3b..6915383 100644
--- a/src/Lib.php
+++ b/src/Lib.php
@@ -193,7 +193,10 @@ public static function php_throwable_args($arg = null, ...$args) : array
         $result[ 'messageDataList' ] = $messageDataList;
 
         $messageDataList = $messageDataList ?? [];
-        $messageData = array_replace(...$messageDataList);
+        $messageData = $messageDataList
+            ? array_replace(...$messageDataList)
+            : [];
+
         $messageObject = (object) ([ $message ] + $messageData);
 
         $result[ 'message' ] = $message;