Merge pull request #1376 from RockChinQ/devin/1746754093-fix-chunk-reference-bug

fix: initialize chunk variable before reference in difysvapi.py

pkg/provider/runners/difysvapi.py

@@ -115,6 +115,8 @@ class DifyServiceAPIRunner(runner.RequestRunner):
         
         inputs.update(query.variables)
         
+        chunk = None  # 初始化chunk变量，防止在没有响应时引用错误
+
         async for chunk in self.dify_client.chat_messages(
             inputs=inputs,
             query=plain_text,
@@ -145,6 +147,9 @@ class DifyServiceAPIRunner(runner.RequestRunner):
                     )
                     basic_mode_pending_chunk = ''
         
+        if chunk is None:
+            raise errors.DifyAPIError("Dify API 没有返回任何响应，请检查网络连接和API配置")
+
         query.session.using_conversation.uuid = chunk["conversation_id"]
 
     async def _agent_chat_messages(
@@ -172,6 +177,8 @@ class DifyServiceAPIRunner(runner.RequestRunner):
 
         pending_agent_message = ''
         
+        chunk = None  # 初始化chunk变量，防止在没有响应时引用错误
+
         async for chunk in self.dify_client.chat_messages(
             inputs=inputs,
             query=plain_text,
@@ -235,6 +242,9 @@ class DifyServiceAPIRunner(runner.RequestRunner):
                 if chunk['event'] == 'error':
                     raise errors.DifyAPIError("dify 服务错误: " + chunk['message'])
         
+        if chunk is None:
+            raise errors.DifyAPIError("Dify API 没有返回任何响应，请检查网络连接和API配置")
+
         query.session.using_conversation.uuid = chunk["conversation_id"]
 
     async def _workflow_messages(