[TheLazySloth]

498, 499, 507, 510, 513, 519, 526:
public OnPlayerPickUpPickup(playerid, pickupid);
change to
public OnPlayerPickUpPickup(playerid, pickupid)

360, 361, 364:
Add under public OnGameModeExit()
DestroyPickup(ammu);
DestroyPickup(hq);
DestroyPickup(hq2);