This custom chat doesn't work in real server.?

This is located in starter gui.It's a local script

local rep = game:GetService('ReplicatedStorage')
local startergui = game:GetService('StarterGui')
local uis = game:GetService('UserInputService')
local plrs = game:GetService('Players')
local chatevent = rep:WaitForChild('ChatRemote')
local client = plrs.LocalPlayer
local mouse = client:GetMouse()
local chatbar = script.Parent
local chatframe = chatbar.Parent
local chats = {}
uis.InputBegan:Connect(function(key)
    if key.KeyCode == Enum.KeyCode.Slash then
        chatbar:CaptureFocus()
    end
end)
local function pushmessage(size)
    for i,v in pairs(chats) do
        v.Position = v.Position - UDim2.new(0,0,0,size)
        if v.Position.Y.Offset < -chatframe.AbsoluteSize.Y then
            chats[i] = nil
            v:Destroy()
        end

    end
end
local function createmessage(message, speaker)
    local label = Instance.new('TextLabel')
    label.BackgroundTransparency = 1
    label.TextXAlignment = 'Left'
    label.TextColor3 = Color3.fromRGB(255, 239, 10)
    label.Font = Enum.Font.Code
    label.FontSize = Enum.FontSize.Size18
    label.Size = UDim2.new(0.8,0,0,20)
    label.Position = UDim2.new(0,0,1,-25)
    label.Text = tostring(speaker)..':'..message
    label.TextScaled = true
    pushmessage(label.Size.Y.Offset)
    chats[#chats+1] = label
    label.Parent = chatframe
    local wordList = {
    "null"; --Content removed by moderators.
    "null"; --Content removed by moderators.
    "null"; --Content removed by moderators.
   "noob";
   "Hello";
  "null"; --Content removed by moderators.   "idiot";
   "kick/";
   "ban/";
}
for i,v in pairs(wordList) do
    if chatbar.Text == v then
        label.Text = client.Name..' IS SWEARING'
    end
end

end

chatevent.OnClientEvent:Connect(function(request, message, speaker)
    request = request:lower()
    if request == 'chat' then
        createmessage(message, speaker)
    end
end)




chatbar.FocusLost:Connect(function(enter)
    if enter then
        chatevent:FireServer('chat', chatbar.Text)
        if chatbar.Text == '' then
            return
            end
            chatbar.Text = 'CLICK here or press SLASH to chat'      
    end
end)
startergui:SetCoreGuiEnabled(Enum.CoreGuiType.Chat, false)

this doesn't work in real server

local wordList = {
    "null"; --Content removed by moderators.
    "null"; --Content removed by moderators.
    "null"; --Content removed by moderators.
   "noob";
   "Hello";
   "null"; --Content removed by moderators.
   "idiot";
   "kick/";
   "ban/";
}
for i,v in pairs(wordList) do
    if chatbar.Text == v then
        label.Text = client.Name..' IS SWEARING'
    end
end

Also this script is located in ServerScriptStorage. It's a normal script

local rep = game:GetService('ReplicatedStorage')
local chatevent = rep:WaitForChild('ChatRemote')


chatevent.OnServerEvent:Connect(function(client, request, value)
    request = request:lower()
    if request == 'chat' then
        chatevent:FireAllClients('chat', value, client.Name)
    end
end)