Help for Game #2025

ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.
    at flash.display::DisplayObjectContainer/removeChild()
    at Code::Main/clearGame()
    at Code::Main/triggerGoToLose()
    at Code::Main/update()

1st link is my as3

2nd link is my fla

https://drive.google.com/open?id=15u9J1HwdenhN1u1t1_Jp0-yg327M1tfq

https://drive.google.com/open?id=1V6G2gHAZsokJGmf1o6raZOi26ZxByRVr

Anyone knows how to fix this?

Also there is a problem, my Log is supposed to spawn 5 of them and my car suppose to spawn 4 of them but when displaying, i see only 1 of each and there is a bug where by a secondary log/car is moving faster than the primary 1 and it's spawning continuously after reaching its destination

package Code {
    import flash.display.*;
    import flash.events.*;
    import flash.ui.*;
   
    public class Main extends MovieClip
    {
        private var life, timeElapsed, totalTimer:Number;
        private var p1speedX, p1speedY:Number;
        private var gotoWin, gotoLose, standingOnLog:Boolean;
        private var logs, cars, homes, logsYPos, carsYPos:Array;

        public function Frogger()
        {
           
        }
       
        //All Start Functions
        public function startMenu()
        {
            stop();
            btnStartGame.addEventListener(MouseEvent.CLICK, gotoStartGame);
        }
       
        public function startWin()
        {
            btnBack.addEventListener(MouseEvent.CLICK, gotoMenu);
        }
       
        public function startLose()
        {
            btnBack.addEventListener(MouseEvent.CLICK, gotoMenu);
        }
       
        public function startGame()
        {           
            timeElapsed = 0;
            totalTimer = 99;
            life = 3;
            p1speedX = 0;
            p1speedY = 0;
            gotoWin = false;
            gotoLose = false;
            standingOnLog = false;
            cars = new Array();
            logs = new Array();
            homes = new Array();
            logsYPos = new Array(142,190,240,291,342);
            carsYPos = new Array(547,608,670,730);
           
            setupGame();
           
            //Spawn Cars
            //Row 1
            for (var i=1; i<=2; i++)
            {
                var newCar = new Car();
                newCar.x = -300 * i;
                newCar.y = carsYPos[0];
                newCar.speedX = 5;
                cars.push(newCar);
                addChild(newCar);
            }
           
            //Row 2
            for (var a=1; a<=3; a++)
            {
                var newCar1 = new Car();
                newCar1.x = (170 * a) + 500;
                newCar1.y = carsYPos[1];
                newCar1.speedX = -5;
                cars.push(newCar);
                addChild(newCar);
            }
           
            //Row 3
            for (var b=1; b<=3; b++)
            {
                var newCar2 = new Car();
                newCar2.x = (-220 * b) + 100;
                newCar2.y = carsYPos[2];
                newCar2.speedX = 8;
                cars.push(newCar);
                addChild(newCar);
            }
           
            //Row 4
            for (var c=1; c<=3; c++)
            {
                var newCar3 = new Car();
                newCar3.x = (200 * c) + 350;
                newCar3.y = carsYPos[3];
                newCar3.speedX = -5;
                cars.push(newCar);
                addChild(newCar);
            }
           
            //Spawn Logs
            //Row 1
            for (var d=1; d<=2; d++)
            {
                var newLog = new LogWood();
                newLog.x = -300 * d;
                newLog.y = logsYPos[0];
                newLog.speedX = 5;
                logs.push(newLog);
                addChild(newLog);
                swapChildren(mcP1,newLog);
            }
           
            //Row 2
            for (var e=1; e<=3; e++)
            {
                var newLog1 = new LogWood();
                newLog1.x = (100 * e) + 1075;
                newLog1.y = logsYPos[1];
                newLog1.speedX = -5;
                logs.push(newLog);
                addChild(newLog);
                swapChildren(mcP1,newLog);
            }
           
            //Row 3
            for (var f=1; f<=3; f++)
            {
                var newLog2 = new LogWood();
                newLog2.x = (-100 * f) + 700;
                newLog2.y = logsYPos[2];
                newLog2.speedX = 8;
                logs.push(newLog);
                addChild(newLog);
                swapChildren(mcP1,newLog);
            }
           
            //Row 4
            for (var g=1; g<=3; g++)
            {
                var newLog3 = new LogWood();
                newLog3.x = (250 * g) + 400;
                newLog3.y = logsYPos[3];
                newLog3.speedX = -5;
                logs.push(newLog);
                addChild(newLog);
                swapChildren(mcP1,newLog);
            }
           
            //Row 5
            for (var h=1; h<=3; h++)
            {
                var newLog4 = new LogWood();
                newLog4.x = (350 * i) + 400;
                newLog4.y = logsYPos[4];
                newLog4.speedX = 13;
                logs.push(newLog);
                addChild(newLog);
                swapChildren(mcP1,newLog);
            }
           
            addEventListener(Event.ENTER_FRAME,update);
            stage.addEventListener(KeyboardEvent.KEY_DOWN,keyDownHandler);
            stage.addEventListener(KeyboardEvent.KEY_UP,keyUpHandler);
           
            stage.focus = this;
        }
       
        private function setupGame()
        {
            //Check the classes of the movieclips and push them into the
            //appropriate arrays
            for (var i=0; i< MovieClip(root).numChildren; i++)
            {
                var object = MovieClip(root).getChildAt(i);
               
                if (object is Home)
                {
                    homes.push(object);
                }
            }
        }
       
        //All Goto Functions
        private function gotoStartGame(evt:MouseEvent)
        {
            btnStartGame.removeEventListener(MouseEvent.CLICK, gotoStartGame);
            gotoAndStop("game");
        }

        private function gotoMenu(evt:MouseEvent)
        {
            btnBack.removeEventListener(MouseEvent.CLICK, gotoMenu);
            gotoAndStop("menu");
        }
       
        private function keyDownHandler(evt:KeyboardEvent)
        {
            if (evt.keyCode == Keyboard.A)
            {
                //1st Player Left Key
                p1speedX = -1;
            }
            else if (evt.keyCode == Keyboard.D)
            {
                //1st Player Right Key
                p1speedX = 1;
            }
           
            if (evt.keyCode == Keyboard.W)
            {
                //1st Player forward
                p1speedY = -1;
            }
            else if (evt.keyCode == Keyboard.S)
            {
                //1st Player back Key
                p1speedY = 1;
            }
        }
       
        private function keyUpHandler(evt:KeyboardEvent)
        {
            if ((evt.keyCode == Keyboard.A) || (evt.keyCode == Keyboard.D))
            {
                p1speedX = 0;
            }
            if ((evt.keyCode == Keyboard.W) || (evt.keyCode == Keyboard.S))
            {
                p1speedY = 0;
            }
        }
       
        public function update(evt:Event)
        {
            handleUserInput();
            handleGameLogic();
            handleDraw();
           
            if (gotoWin)
                triggerGoToWin();
            else if (gotoLose)
                triggerGoToLose();
        }
       
        private function handleUserInput()
        {
            //Handle player 1 position
            if (p1speedX > 0)
            {
                if (mcP1.x + 50 < 800)
                    mcP1.x += 50;
               
                p1speedX = 0;
                mcP1.rotation = 90;
                mcP1.play();
            }
            else if (p1speedX < 0)
            {
                if (mcP1.x - 50 > 0)
                    mcP1.x -= 50;   
                p1speedX = 0;
                mcP1.rotation = -90;
                mcP1.play();
            }
           
            if (p1speedY < 0)
            {
                mcP1.y -= 50;
               
                p1speedY = 0;
                mcP1.rotation = 0;
                mcP1.play();
            }
            else if (p1speedY > 0)
            {
                if (mcP1.y + 50 < 600)
                    mcP1.y += 50;   
                p1speedY = 0;
                mcP1.rotation = -180;
                mcP1.play();
            }
        }
       
        private function handleGameLogic()
        {
            timeElapsed++;
           
            //update the cars
            for (var i=cars.length-1; i>= 0; i--)
            {
                cars.x += cars.speedX;
               
                //Check for collision with frog
                if (cars.hitTestPoint(mcP1.x,mcP1.y))
                {
                    life--;
                    resetGame();
                }
               
                if (cars.speedX < 0 && cars.x <= -50)
                {
                    cars.x = 1045;
                }
                else if (cars.speedX > 0 && cars.x >= 1045)
                {
                    cars.x = -50;
                }
            }
           
            //update the logs
            var standingOnLog = false;
            for (var k=logs.length-1; k>= 0; k--)
            {
                logs.x += logs.speedX;
               
                //Check for collision with frog
                if (logs.hitTestPoint(mcP1.x,mcP1.y))
                {
                    standingOnLog = true;
                    mcP1.x += logs.speedX;
                }
               
                if (logs.speedX < 0 && logs.x <= -50)
                {
                    logs.x = 1045;
                }
                else if (logs.speedX > 0 && logs.x >= 1045)
                {
                    logs.x = -50;
                }
            }
           
            //check if frog reaches homes
            for (var j in homes)
            {
                if (homes.hitTestObject(mcP1))
                {
                    homes.gotoAndStop("occupied");
                   
                    mcP1.x = 400;
                    mcP1.y = 565;
                }
            }
           
            //Check if beetle is in water
            if (mcP1.y < 365) //in water zone
            {
                if (!standingOnLog)
                {
                    life--;
                    resetGame();
                }
            }
           
            //Check if timeElapsed or life lost
            if ((totalTimer - Math.floor(timeElapsed/30) <= 0) ||
                (life <= 0))
                gotoLose = true;
           
            //check if all homes are occupied
            var allOccupied = true;
            for (var l in homes)
            {
                if (homes.currentLabel == "empty")
                    allOccupied = false;
            }
            if (allOccupied)
                gotoWin = true;
        }
       
        private function handleDraw()
        {
            //Handle display
            txtTime.text = String(totalTimer - Math.floor(timeElapsed/30));
            txtLife.text = String(life);
        }
       
        private function clearGame()
        {
            //clear away screen items
            for (var i=cars.length-1; i>= 0; i--)
            {
                removeChild(cars);
                cars.splice(i,1);
            }
           
            for (var m=logs.length-1; m>= 0; m--)
            {
                removeChild(logs);
                logs.splice(m,1);
            }
        }
       
        private function triggerGoToWin()
        {
            clearGame();
            removeEventListener(Event.ENTER_FRAME, update);
            gotoAndStop("win");
        }
       
        private function triggerGoToLose()
        {
            clearGame();
            removeEventListener(Event.ENTER_FRAME, update);
            gotoAndStop("lose");
        }
       
        //Misc Functions
        private function resetGame()
        {
            mcP1.x = 501;
            mcP1.y = 725;
        }
    }//end class   
}//end package