Very strange roblox pathfinding bug(please help)

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#1

So i making a npcs that follows players, and i using collection service and pathfinding service. I think, npcs is going to old player position. I don`t know how to fix it, please help.

local Tags = game:GetService("CollectionService")
local pathfindingService = game:GetService("PathfindingService")



function findNearestTorso(pos,npc)
	local list = game.Workspace:GetChildren()
	local torso = nil
	local dist = 10000
	local temp = nil
	local human = nil
	local temp2 = nil
	for x = 1, #list do
		temp2 = list[x]
		if (temp2.className == "Model") and (temp2 ~= npc) and (temp2.Name ~= "Zombie")  then
			temp = temp2:findFirstChild("HumanoidRootPart")
			human = temp2:findFirstChild("Humanoid")
			if (temp ~= nil) and (human ~= nil) and (human.Health > 0)  then
				if (temp.Position - pos).Magnitude < dist then
					torso = temp
					dist = (temp.Position - pos).Magnitude
				end
			end
		end
	end
	return torso
end

function pathfind2(Target,Hum,hroot)

	local enemytorso = Target
	local human = Hum
	local direct = Vector3.FromNormalId(Enum.NormalId.Back)
	local ncf = hroot.CFrame * CFrame.new(direct)
	local connection;
	direct = ncf.p
	local path = pathfindingService:CreatePath()
	path:ComputeAsync(direct,enemytorso.Position)
	local waypoint = path:GetWaypoints()

	for index, WayPoint in ipairs(waypoint) do

			human:MoveTo(WayPoint.Position);
	--	if index > 2 then return end


	end
end


function getHumanoid(model)
	for _, v in pairs(model:GetChildren()) do
		if v:IsA'Humanoid' then
			return v
		end
	end
end

function setupNpc(npc,target)
	npc.HumanoidRootPart:SetNetworkOwner(nil)
	local zombie = npc
	local human = getHumanoid(zombie)
	local hroot = zombie.HumanoidRootPart
	
	if target ~= nil then
		pathfind2(target,human,hroot)



	end
end

function cleanupNpc(npc)
	--free resources used by the NPC
end


--Tags:GetInstanceAddedSignal("NpcAI"):Connect(setupNpc)
--Tags:GetInstanceRemovedSignal("NpcAI"):Connect(cleanupNpc)


--for _, tagged in Tags:GetTagged("NpcAI") do
--			setupNpc(tagged)
--end








while true do
	wait()
	for _, tagged in Tags:GetTagged("NpcAI") do
		local target = 	findNearestTorso(tagged.HumanoidRootPart.Position,tagged)
		
			setupNpc(tagged,target)
	end
end
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