Cannot read property of "x"

Question

It kept saying that the property of x is undefined, but this event would occur temporarily. When the bullet collides with the ufo. How could i fix that?

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

const bulletsShooting = bullets.filter(element => element.isShooting === true)

for(var bulletShooting of bulletsShooting){

if(Collide(bulletShooting, fruits[i])){
fruits.splice(fruits.indexOf(fruits[i]), 1)
numberOfFruits -= 1
player.score += 10
}
}
}
https://code.sololearn.com/W5Y5Nkm3A7jB/?ref=app