Internal Server Error?

Im trying to make a plugin that increases an item's desired damage value.

Here's my code:

public function onHitSent(EntityDamageByEntityEvent $event){
$entity = $event->getEntity();
$damager = $event->getDamager();
$item = $damager->getInventory()->getItemInHand();
if($this->getConfig()->get("use-damage") === true){
if($item->getID() == $this->getConfig()->get("item")) {
$entity->setHealth($entity->getHealth() - $this->getConfig()->get("damage") );
}
}
}

And every time I hit an entity it either does not give the damage I want or:
[08:06:41] [Server thread/CRITICAL]: RuntimeException: "Recursive event call detected (reached max depth of 50 calls)" (EXCEPTION) in "src/pocketmine/event/Event" at line 87

 

PHP:

public function onDamage(EntityDamageEvent $event){
$entity = $event->getEntity();
if($event instanceof EntityDamageByEntityEvent) {
$damager = $event->getDamager();
$item = $damager->getInventory()->getItemInHand();
if($this->getConfig()->get("use-damage") === true && $item->getId() === $this->getConfig()->get("item")){
$entity->setHealth($entity->getHealth() - $this->getConfig()->get("damage"));


 

If you want to change amount of damage dealt to player

PHP:

$event->setBaseDamage($this->getConfig()->get("damage"));

If you want to change amount of damage to durability of item

PHP:

$item->applyDamage($this->getConfig()->get("damage"));

 

Start deleting plugins? I guess...

 

show the rest of the backtrace