Acura TL 2008 shutting off after dropping RPMs

hello,

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as body says im unsure whats going on, my Acura TL 2008 suddenly jus shut off after trying to accelerate and drive out of my parking spot, its the like RPMs as they lower it stalls and shuts off. its turning off and on no problem the only issue is when its revving to drive off or just revving and then jus shuts off as the RPMs lower. im also hearing a hissing sound coming from the vents?

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can anybody help and pinpoint to me what may be the issue ? greatly appreciated for anyone that can.