"Humanoid is not a valid member of Model" can anyone help me fix this thing?

Im Planning to make an Npc to follow me but i somehow can't. How is this happening?

local h = script.Parent.Humanoid
 local torso = script.Parent.Torso
 local spawnCF = torso.CFrame

function findPlayer()
 for _,v in next, game.Players:GetPlayers() do
  if v.Character then local char = v.Character
   if char:FindFirstChild("Humanoid") and char:FindFirstChild("Torso") then
    local ptorso = char.Torso
    if (ptorso.Position - torso.Position).magnitude <= 20 then
     return v 
     end
    end
   end
  end
 return nil
end 


while wait() do 
local player = findPlayer()
 if player ~= nil then
  h.WalkToPoint = player.Character.Torso.Position 
 else 
  h.WalkToPoint = spawnCF.p 
  end
 end