diff --git a/Handler/OnServerWorker.php b/Handler/OnServerWorker.php
index 6767eea..0431201 100644
--- a/Handler/OnServerWorker.php
+++ b/Handler/OnServerWorker.php
@@ -107,6 +107,7 @@ class OnServerWorker extends \Kiri\Server\Abstracts\Server
     {
         event(new OnWorkerError($server, $worker_id, $worker_pid, $exit_code, $signal));
 
+        debug_print_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT);
         $message = sprintf('Worker#%d::%d error stop. signal %d, exit_code %d, msg %s',
             $worker_id, $worker_pid, $signal, $exit_code, swoole_strerror(swoole_last_error(), 9)
         );