Please someone help me solve this how a npc find the nearest humanoid?

I'm trying to make a pathfinding npc to find the nearest humanoid but it's not working. I can't figure out the part to make the npc find the nearest humanoid! Here's my script:

function findNearestHumanoid(position)
	local allPals = game.Workspace:children()
	local nearestHumanoid = nil
	local dist = 10000
	local humRoot = nil
	local human = nil
	local pal = nil
	for x = 1, #allPals do --för varje #allPals. För första pal är x = 1. För andra loopen  x=2 osv
		pal = allPals[x]
		if (pal.className == "Model") and (pal ~= script.Parent) then
			humRoot = pal:findFirstChild("HumanoidRootPart")
			human = pal:findFirstChild("Humanoid")
			if (humRoot ~= nil) and (human ~= nil) and (human.Health > 0) then
				if (humRoot.Position - position).magnitude < dist then
					nearestHumanoid = humRoot.Parent
					dist = (humRoot.Position - position).magnitude
				end
			end
		end
	end
	return nearestHumanoid
end

local torso = script.Parent.Torso.Position
local human = script.Parent.Humanoid
local base = findNearestHumanoid()

local path = game:GetService("PathfindingService"):FindPathAsync(torso,base.Positon)
local points = path:GetWaypoints()


for i,v in pairs(points) do
	local p = Instance.new("Part", workspace)
	p.Anchored = true
	p.CanCollide = false
	p.CFrame = CFrame.new(v.Position)
	p.Size = Vector3.new(1,1,1)
end


if path.Status == Enum.PathStatus.Success then 
	for i,v in pairs(points) do
		human:MoveTo(v.Position)
		human.MoveToFinished:wait()
		if v.Action == Enum.PathWaypointAction.Jump then
			human.Jump = true
		
	     end
	
	end

end