AI from Server Storage not working?

So I am working on a game and I added simple follow AI so an NPC follows the nearest player. The ai Spawns randomly in in randomly generated rooms when the AI does spawn they don't move.

Here is the code

local humanoid = script.Parent.Humanoid
local HRP = script.Parent.HumanoidRootPart

local pathfindingservice = game:GetService("PathfindingService")

local Players = game:GetService("Players")

local maxDistance = 40

local destination = nil

repeat wait() until script.Parent == workspace

while true do
    wait(0.016)
    local nearestPlayer, nearestDistance
    for _, player in pairs(Players:GetPlayers()) do
        local character = player.Character
        local distance = player:DistanceFromCharacter(HRP.Position)
        if not character or 
            distance > maxDistance or
            (nearestDistance and distance >= nearestDistance)
        then
            continue
        end
        nearestDistance = distance
        nearestPlayer = player
    end
    print("The nearest player is ", nearestPlayer)
    if nearestPlayer ~= nil then
        humanoid:MoveTo(nearestPlayer.Character.HumanoidRootPart.Position)
    end
end

I don't know why it is not working.