From 83145486b05b609812d696878c0ebefd6ab997de Mon Sep 17 00:00:00 2001
From: VoidIsVoid <343750470@qq.com>
Date: Mon, 18 Mar 2024 13:17:16 +0800
Subject: [PATCH] fix: fix unstable function call response arguments missing
 (#2872)

---
 api/core/model_runtime/model_providers/openai/llm/llm.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/api/core/model_runtime/model_providers/openai/llm/llm.py b/api/core/model_runtime/model_providers/openai/llm/llm.py
index 2ea65780f1..46f17fe19b 100644
--- a/api/core/model_runtime/model_providers/openai/llm/llm.py
+++ b/api/core/model_runtime/model_providers/openai/llm/llm.py
@@ -656,6 +656,8 @@ class OpenAILargeLanguageModel(_CommonOpenAI, LargeLanguageModel):
                 if assistant_message_function_call:
                     # start of stream function call
                     delta_assistant_message_function_call_storage = assistant_message_function_call
+                    if delta_assistant_message_function_call_storage.arguments is None:
+                        delta_assistant_message_function_call_storage.arguments = ''
                     if not has_finish_reason:
                         continue