how would I fix these errors in a NPC follow script?

honestly Idk how many errors there are i got this online so please do a check for viruses as well thx! :)

local NPC = script.Parent
local Humanoid = script.Parent:FindFirstChild("Humanoid")
local HRP = script.Parent:FindFirstChild("HumanoidRootPart")
local function GetClosestPlayer(range)
    local List = {}
    local Target = nil
    for i, v in pairs(game.Players:GetPlayers()) do
        local dist = v:DistanceFromCharacter(HRP.position)
        if dist <= range then
            table.insert(List, {dist, v})
        end
    end

    table.sort(List, function(A, B)
        return A[1] < B[1]
    end)

    pcall(function()
        Target = List[1][2]
    end)

    return Target
end

local NPC = script.Parent
local Humanoid = script.Parent:FindFirstChild("Humanoid")
local HRP = script.Parent:FindFirstChild("HumanoidRootPart")

local function GetClosestPlayer(range)
    local List = {}
    local Target = nil
    for i, v in pairs(game.Players:GetPlayers()) do
        local dist = v:DistanceFromCharacter(HRP.position)
        if dist <= range then
            table.insert(List, {dist, v})
        end
    end

    table.sort(List, function(A, B)
        return A[1] < B[1]
    end)

    pcall(function()
        Target = List[1][2]
    end)

    return Target
end

while true do
    wait()
    local Target = getClosestPlayer(30) -- // change 30 to the max distance
    if Target == nil then return end
    Humanoid:MoveTo(Target.PrimaryPart)
    Humanoid.MoveToFinished:Wait()
end

Ps: I dont have the errors I kinda left the game alone and never went back to it lol its somewhere XD