Why is the Touched event not functioning properly with NPCs?

I tried debugging the script by adding prints, but it only printed the touched part's name, after that nothing happens. I have tried to direct the fireball's direction to an NPC, and none of the NPC's body parts' name is showing on the Developer Console of the Server tab.

The script below is in a Script

Oh yeah, it also prints other part's name, like the Baseplate for an example.

wait(1)

local fireball = script.Parent

repeat wait() until fireball:IsA("BasePart")

local Damage = script:WaitForChild("Damage")
local Creator = script:WaitForChild("Creator")

local player = Creator.Value
local pvp = player:WaitForChild("PvP")

local enabled = true

fireball.Touched:Connect(function(hit)
	if not enabled then return end
	
	print(script.Name..": "..hit.Name.." found!")
	fireball.Anchored = true
	
	if hit.Parent:FindFirstChild("Humanoid") then
		enabled = false
		
		local targetHumanoid = hit.Parent:FindFirstChild("Humanoid")
		if targetHumanoid ~= nil then
			print(script.Name..": Humanoid is dere")
			if game.Players:GetPlayerFromCharacter(targetHumanoid.Parent) then
				print(script.Name..": Target is a player.")
				local targetPlayer = game.Players:GetPlayerFromCharacter(targetHumanoid.Parent)
				local targetPvp = targetPlayer:WaitForChild("PvP")
				if pvp.Value and targetPvp.Value then
					print(script.Name..": Both PvP on")
					targetHumanoid:TakeDamage(Damage.Value)
					print(script.Name..": Damaged inflicted")
				end
			else
				print(script.Name..": Target is an NPC")
				targetHumanoid:TakeDamage(Damage.Value)
				print(script.Name..": Damage inflicted")
			end
		end
	end
	
	wait(1.5)
	enabled = true
end)