Fixes #9453 and fixes #10614

code/modules/mob/living/silicon/robot/drone/drone_items.dm

@@ -87,6 +87,9 @@
 
 /obj/item/weapon/gripper/no_use //Used when you want to hold and put items in other things, but not able to 'use' the item
 
+/obj/item/weapon/gripper/no_use/attack_self(mob/user as mob)
+	return
+
 /obj/item/weapon/gripper/no_use/loader //This is used to disallow building with metal.
 	name = "sheet loader"
 	desc = "A specialized loading device, designed to pick up and insert sheets of materials inside machines."
@@ -101,9 +104,6 @@
 		return wrapped.attack_self(user)
 	return ..()
 
-/obj/item/weapon/gripper/no_use/attack_self(mob/user as mob)
-	return
-
 /obj/item/weapon/gripper/verb/drop_item()
 
 	set name = "Drop Item"
@@ -130,6 +130,8 @@
 		force_holder = wrapped.force
 		wrapped.force = 0.0
 		wrapped.attack(M,user)
+		if(deleted(wrapped))
+			wrapped = null
 		return 1
 	return 0