From 1ca9bd8b9fb3a59c30ceb50ab83908a3ed715b2a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=8E=98=E6=9D=83=20=E9=A9=AC?= <mashenquan@fuzhi.ai>
Date: Thu, 18 Apr 2024 19:55:30 +0800
Subject: [PATCH] fixbug: action return None

---
 metagpt/roles/role.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/metagpt/roles/role.py b/metagpt/roles/role.py
index 57dd51139..142c3a5b9 100644
--- a/metagpt/roles/role.py
+++ b/metagpt/roles/role.py
@@ -406,7 +406,7 @@ class Role(SerializationMixin, ContextMixin, BaseModel):
         elif isinstance(response, Message):
             msg = response
         else:
-            msg = Message(content=response, role=self.profile, cause_by=self.rc.todo, sent_from=self)
+            msg = Message(content=response or "", role=self.profile, cause_by=self.rc.todo, sent_from=self)
         self.rc.memory.add(msg)
 
         return msg