qualifyContracts getting error when called in TickerEvent

[siren0413]

ib.connect('127.0.0.1', 4001, clientId=1) ib.qualifyContracts(stock_contracts) ib.qualifyContracts(option_contracts)

The above works fine when starting the program. However, if in the tickerEvent func, I'm trying to call the ib.qualifyContracts again for some new symbols, it fails with error:

Traceback (most recent call last): File "/Users/yijunmao/PycharmProjects/inquidtrade/venv/lib/python3.7/site-packages/eventkit/event.py", line 181, in emit func(args) File "/Users/yijunmao/PycharmProjects/inquidtrade/tickers.py", line 13, in onPendingTickers objects.ib.qualifyContracts(tsla) File "/Users/yijunmao/PycharmProjects/inquidtrade/venv/lib/python3.7/site-packages/ib_insync/ib.py", line 551, in qualifyContracts return self._run(self.qualifyContractsAsync(contracts)) File "/Users/yijunmao/PycharmProjects/inquidtrade/venv/lib/python3.7/site-packages/ib_insync/ib.py", line 301, in _run return util.run(*awaitables, timeout=self.RequestTimeout) File "/Users/yijunmao/PycharmProjects/inquidtrade/venv/lib/python3.7/site-packages/ib_insync/util.py", line 312, in run result = loop.run_until_complete(task) File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/asyncio/base_events.py", line 571, in run_until_complete self.run_forever() File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/asyncio/base_events.py", line 526, in run_forever raise RuntimeError('This event loop is already running') RuntimeError: This event loop is already running

[siren0413]

The problem has been discussed in the groups: https://groups.io/g/insync/topic/28884902#2789