Will quantitative AI operations make mistakes?

This year, I applied for withdrawal on February 9, 2011, and I needed to use it in an emergency. The system was improperly operated on the same day that I encountered the system, resulting in the liquidation of the principal and profits and losses. The period is normal. I would like to ask if this is reasonable? If the fully automatic quantitative AI is advertised, there will be a certain stop loss point. It should not be possible for this situation to occur.