From e875709147a2df1c57cc7611b64f77267c38f670 Mon Sep 17 00:00:00 2001
From: LIghtJUNction <lightjunction.me@gmail.com>
Date: Wed, 29 Apr 2026 07:10:45 +0800
Subject: [PATCH] fix: reasoning_content None guard in openai_source think part
 parsing

---
 astrbot/core/provider/sources/openai_source.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/astrbot/core/provider/sources/openai_source.py b/astrbot/core/provider/sources/openai_source.py
index 6e79cba61..83e696b91 100644
--- a/astrbot/core/provider/sources/openai_source.py
+++ b/astrbot/core/provider/sources/openai_source.py
@@ -1012,7 +1012,9 @@ class ProviderOpenAIOfficial(Provider):
                 for part in message["content"]:
                     if part.get("type") == "think":
                         reasoning_content_present = True
-                        reasoning_content += str(part.get("think"))
+                        reasoning_content = (reasoning_content or "") + str(
+                            part.get("think")
+                        )
                     else:
                         new_content.append(part)
                 # Some providers (Grok, etc.) reject empty content lists.