IndexOutOfRangeException: Array index is out of range. (87248)

var explore:GameObject;

function Update()

{

explore=GameObject.FindGameObjectsWithTag("Player");

for(var i=0;i<=20;i++)
{

explore*.transform.Translate(0,0,1);*

}
}

There’s no guarantee that FindGameObjectsWithTag() will find 21 items (21 because the array is zero based). If you have 20 items in the scene, then just use ‘<’. But a better way is to use ‘Length’.

for(var i=0; i < explore.Length; i++) {
    explore*.transform.Translate(0,0,1);*

}