From fb2541a14e39e151d5fe5b1ba94f25e8aa69d462 Mon Sep 17 00:00:00 2001
From: Hongpeng Guo <hg5@illinois.edu>
Date: Tue, 3 Jun 2025 23:45:55 -0700
Subject: [PATCH] adding default value

Signed-off-by: Hongpeng Guo <hg5@illinois.edu>
---
 verl/single_controller/ray/base.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/verl/single_controller/ray/base.py b/verl/single_controller/ray/base.py
index ce607bbf612..0ec0c97e623 100644
--- a/verl/single_controller/ray/base.py
+++ b/verl/single_controller/ray/base.py
@@ -406,7 +406,7 @@ def worker_names(self):
     @classmethod
     def from_detached(
         cls,
-        name_prefix,
+        name_prefix=None,
         worker_names=None,
         worker_handles=None,
         ray_cls_with_init=None,