Make mouse event active in keyboard event

programming flash
1

I’m making a flash game.

When game starts, the car runs automatically.
Then we click the SPACE button, movement of car stops.
And the door of structure near car is available to CLICK.

But in coding I got this error code:
TypeError: Error #2007: Parameter listener must be non-null.
at flash.events::EventDispatcher/addEventListener()
at shfg_fla::MainTimeline/key_pressed()

This is some part of my game code…

case Keyboard.SPACE :
[COLOR=“Magenta”]removeEventListener/COLOR;
–[COLOR=“Red”]street_mc.[/COLOR][COLOR=“Teal”]bluehome_mc[/COLOR].[COLOR=“SeaGreen”]door_btn[/COLOR].[COLOR="#ff00ff"]addEventListener/COLOR;
–function door_ready(en:MouseEvent):void {
----trace(“Door CLICK active”);
–}