fix: The form node cannot be used (#3514)

Author: shaohuzhang1

apps/chat/serializers/chat.py

@@ -241,8 +241,8 @@ def chat_work_flow(self, chat_info: ChatInfo, instance: dict, base_to_response):
                                           WorkFlowPostHandler(chat_info),
                                           base_to_response, form_data, image_list, document_list, audio_list,
                                           other_list,
-                                          self.data.get('runtime_node_id'),
-                                          self.data.get('node_data'), chat_record, self.data.get('child_node'))
+                                          instance.get('runtime_node_id'),
+                                          instance.get('node_data'), chat_record, instance.get('child_node'))
         r = work_flow_manage.run()
         return r