不知道发生了什么？上午还可以回测的

Traceback (most recent call last):
File "e:\vnpy\lib\site-packages\vnpy\trader\ui\mainwindow.py", line 282, in open_widget
widget = widget_class(self.main_engine, self.event_engine)
File "e:\vnpy\lib\site-packages\vnpy_ctabacktester\ui\widget.py", line 51, in init
self.backtester_engine.init_engine()
File "e:\vnpy\lib\site-packages\vnpy_ctabacktester\engine.py", line 66, in init_engine
self.init_datafeed()
File "e:\vnpy\lib\site-packages\vnpy_ctabacktester\engine.py", line 72, in init_datafeed
result = self.datafeed.init()
File "e:\vnpy\lib\site-packages\vnpy_rqdata\rqdata_datafeed.py", line 119, in init
max_pool_size=1
File "e:\vnpy\lib\site-packages\rqdatac\client.py", line 232, in init
quota = get_client().execute("user.get_quota")
File "e:\vnpy\lib\site-packages\rqdatac\decorators.py", line 67, in wrap
return func(args, **kwargs)
File "e:\vnpy\lib\site-packages\rqdatac\connection_pool.py", line 26, in execute
with self._get_connection() as conn:
File "e:\vnpy\lib\contextlib.py", line 112, in enter
return next(self.gen)
File "e:\vnpy\lib\site-packages\rqdatac\connection_pool.py", line 37, in _get_connection
conn = self._ensure_connection()
File "e:\vnpy\lib\site-packages\rqdatac\connection_pool.py", line 58, in _ensure_connection
return self._new_connection()
File "e:\vnpy\lib\site-packages\rqdatac\decorators.py", line 67, in wrap
return func(args, **kwargs)
File "e:\vnpy\lib\site-packages\rqdatac\connection_pool.py", line 64, in _new_connection
return Connection(s, self._auth)
File "rqdatac\connection.py", line 54, in rqdatac.connection.Connection.init
File "rqdatac\connection.py", line 97, in rqdatac.connection.Connection._do_auth
File "rqdatac\connection.py", line 87, in rqdatac.connection.Connection._read_one_packet
rqdatac.share.errors.PermissionDenied: this license is only

看报错是米筐问题，权限受阻？

解决了，是我之前把VPN给关掉了 结果连不到校园网就有问题