Code Reader

Code reader:
LocalScript:

lines = script.Parent.Line_Sections
code = {}
Data = 'print("Hello world!")'
sender = game:GetService("ReplicatedStorage"):WaitForChild("SendCode")
m = 'Trying to access the message when message is nil.'

function Protected(m)
    error(m)
end
Data = ''
for i, v in pairs(script.Parent.Line_Sections:GetChildren()) do
    wait()
    Data = Data..' '..v.Text
end

sender:FireServer(Data)
sender.OnClientEvent:connect(function(me)
    if me ~= true then
        m = me
        pcall(Protected)
    end
end)

ServerScript:

local sender = game:GetService('ReplicatedStorage'):WaitForChild('SendCode')
local code = 'print("Hello world!")'

sender.OnServerEvent:connect(function(plr, txt)
    code = txt
    local function Pro()
        loadstring(tostring(code))()
    end
    local s, m = pcall(Pro)
    if s then
        sender:FireClient(plr, true)
    else
        sender:FireClient(plr, tostring(m))
    end
end)