Level Door error!

[Radical Batz]

I made the level door teleport me to another map, but whenever I click on the level door and loads the map it just gets me this error
and it's not the level door that does this error, even when i spawn in the map that the level door takes me too

"FATAL ERROR: Could not load script file 'custom stories/Lifeless_The Abandon/maps/C:/Program Files/Amnesia - Thew Dark Descent/ redist/ custom stories/Lifeless_ The Abandon/maps/ Lieless_The Abandon3.hps'! ExecuteString (1, 1):ERR :No matching signatures to 'onLeave()' main (1,2) :ERR :Expected identifier"

and here is the hps of the level door is supposed to teleport me to

voidOnStart()

{AddUseItemCallback("OpenDoor", "key_tomb_1", "level_celler_1", "UnlockLevelDoor",true);

}

voidOnEnter()
{

}


void UnlockLevelDoor(string &in item, &in entity)
{
SetLevelDoorLocked(Entity, false);
//RemoveItem(item);
}

////////////////////////////
// Run when entering map
void OnEnter()
{

}

////////////////////////////
// Run when leaving map
void OnLeave()
{

}