Code works perfectly in test but not in game? Filtering enabled help [closed]

This code works perfectly in test on roblox studio but not in game. I know it has something to do with filtering enabled and RemoteEvents but i don't know what to do.

the code is meant to make an npc follow another npc and shoot it.

Script location: inside a npc

Not a local script

local players = game.Players:GetChildren()

function findNearestTorso(pos)
    local list = workspace.Zombies:children()
    local torso = nil
    local dist = 15
    local temp = nil
    local human = nil
    local temp2 = nil
    for x = 1, #list do
        temp2 = list[x]
        if (temp2.className == "Model") and (temp2 ~= script.Parent) 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

while true do
    wait()
    if script.Parent.Parent.Name == "General" then
        local target = findNearestTorso(script.Parent.Torso.Position)
        if target ~= nil then
            if target.Parent ~= nil then
                wait(1)
                script.Parent:SetPrimaryPartCFrame(CFrame.new(script.Parent.Torso.Position, target.position))
                if target ~= nil then
                    if target.Parent ~= nil then
                        target.Parent.Humanoid.Health = target.Parent.Humanoid.Health - 1
                        wait(.1)
                        if target ~= nil then
                            if target.Parent ~= nil then
                                target.Parent.Humanoid.Health = target.Parent.Humanoid.Health - 1
                                wait(.1)
                                if target ~= nil then
                                    if target.Parent ~= nil then
                                        target.Parent.Humanoid.Health = target.Parent.Humanoid.Health - 1
                                    end
                                end
                            end
                        end
                    end
                end
            end
            end
    end
end

Thanks in advance