创建新分支feature

src/plugins/memory_system/memory_make.py

@@ -142,12 +142,13 @@ class Memory_graph:
             # 获取该时间戳之后的length条消息，且groupid相同
             chat_record = list(self.db.db.messages.find({"time": {"$gt": closest_time}, "group_id": group_id}).sort('time', 1).limit(length))
             for record in chat_record:
-                time_str = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(record['time'])))
-                try:
-                    displayname="[(%s)%s]%s" % (record["user_id"],record["user_nickname"],record["user_cardname"])
-                except:
-                    displayname=record["user_nickname"] or "用户" + str(record["user_id"])
-                chat_text += f'[{time_str}] {displayname}: {record["processed_plain_text"]}\n'  # 添加发送者和时间信息
+                if record:
+                    time_str = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(record['time'])))
+                    try:
+                        displayname="[(%s)%s]%s" % (record["user_id"],record["user_nickname"],record["user_cardname"])
+                    except:
+                        displayname=record["user_nickname"] or "用户" + str(record["user_id"])
+                    chat_text += f'[{time_str}] {displayname}: {record["processed_plain_text"]}\n'  # 添加发送者和时间信息
             return chat_text
         
         return []  # 如果没有找到记录，返回空列表