元素收集 报错

[ntuwang]

Hi 大神
我使用元素收集，点击 跳转显示OK，但celery 如下报错，元素查询 确实没有数据。（pymysql的源码我也修改的）
[2017-12-31 08:37:41,217: ERROR/PoolWorker-2] Task dbms.tasks.get_matedata[8a50b951-c61f-472c-81df-945adc17e36c] raised unexpected: Error('Already closed',)
Traceback (most recent call last):
File "/home/wangchao/.virtualenvs/aquila_v2/lib/python3.5/site-packages/celery/app/trace.py", line 367, in trace_task
R = retval = fun(*args, **kwargs)
File "/home/wangchao/.virtualenvs/aquila_v2/lib/python3.5/site-packages/celery/app/trace.py", line 622, in protected_call
return self.run(*args, **kwargs)
File "/home/wangchao/PycharmProjects/djdba/dbms/tasks.py", line 83, in get_matedata
conn_info.clean_item()
File "/home/wangchao/PycharmProjects/djdba/dbms/tasks.py", line 405, in clean_item
self.cur.close()
File "/home/wangchao/PycharmProjects/djdba/scripts/functions.py", line 64, in close
self.conn.close()
File "/home/wangchao/.virtualenvs/aquila_v2/lib/python3.5/site-packages/pymysql/connections.py", line 728, in close
raise err.Error("Already closed")
pymysql.err.Error: Already closed