Second Callback Never Happens

[hc128168]

I tried the latest sample code trader_main.py with the fix.

I noticed that OnRspQryTradingAccount() didn't get called.

Then, I removed ReqQryInvestor() and ReqQryTradingAccount() in your sample code, OnRspQryTradingAccount() did get called.

Any idea what's going on?

Thanks!