add

server/app/Http/Controllers/Admin/System/InfoController.php

@@ -163,7 +163,8 @@ class InfoController extends Controller
         $arr = [] ;
         foreach ($users as $user) {
             $arr[] = [
-                'user_id' =>$user['id'],
+                'user_id' =>0,
+                'to_user_id' =>$user['id'],
                 'message' =>$message,
                 'created_at'=>date("Y-m-d H:i:s"),
                 'updated_at'=>date("Y-m-d H:i:s"),