I have a piece of code that is changing the position of player when left key is pressed. It is inside of Update() function. I know, Update is called multiple times, but since I have an ifstatement to check if left arrow is pressed, it should update only once. I have tested using print statement that once pressed, it gets called twice.

Problem: Position updated twice when key is pressed only once.

Below given is the structure of my code:

void Update()
{
    if (Input.GetKeyDown (KeyCode.LeftArrow)) 
    {
        print ("PRESSEEEEEEEEEEEEEEEEEEDDDDDDDDDDDDDD");
    }
}

I looked up on web and what was suggested id this:

if (Event.current.type == EventType.KeyDown && Event.current.keyCode == KeyCode.LeftArrow)
{
    print("pressed");
}

But, It gives me an error that says:

Object reference not set to instance of an object

How can I fix this?