FATAL ERROR

[Saren]

I got a script here,
It says (1,1) Err: No matching signatures to 'OnLeave()' main 44,15):Err Unexpected end of file
// Run when entering map
void OnStart()
{
AddUseItemCallback("", "Prisonkey", "prisondoor", "UsedKeyOnDoor", true);
AddEntityCollideCallback("Player", "PlayerCollide", "MonsterFunction", true, 1);
}
void UsedKeyOnDoor(string &in asItem, string &in asEntity)
{
SetSwingDoorLocked("prisondoor", false, true);
PlaySoundAtEntity("", "unlock_door", "prisondoor", 0, false);
RemoveItem("Prisonkey");
}
//Prison brute
void MonsterFunction(string &in asParent, string &in asChild, int alState)
{
SetEntityActive("servant_brute", true);
AddEnemyPatrolNode("servant_brute", "PathNodeArea_1", 2, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_2", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_3", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_4", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_5", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_6", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_7", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_8", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_9", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_10", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_11", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_12", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_13", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_14", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_15", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_16", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_17", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_18", 0, "");
AddEnemyPatrolNode("servant_brute", "PathNodeArea_19", 0, "");
}
void Despawngrunt_foodstorage(string &in asParent , string &in asChild , int alState)
{
SetEntityActiveservant_brute", false);
}
void OnLeave()