Trade Signals are ignored by an wrong reason of trade outside working hours

I was trading at 10:30:00 and got a signal from my program but ib controller display this message and didn't place order.
Why does it happen? it's so scary that got reverse signals but didn't place orders.
Thanks!

Errors like that are entirely generated by interactive Brokers TWS, not AmiBroker and you should direct such questions to IB not here. IBController just transparently passed the message received from TWS.

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