Cannot find ChatModules? chat bot problems?

So I made this code

local function Run(ChatService) 

    -- Bot definitions.

        local bot = ChatService:AddSpeaker("Greetings") -- The bot's name.
        bot:JoinChannel("All") -- Joins every channel.
        bot:SetExtraData("NameColor", Color3.new(150/255, 167/255, 255/255)) -- 249, 207, 249 // The bot's name color. Current color is blue.
        bot:SetExtraData("ChatColor", Color3.new(249/255, 207/255, 249/255)) -- The bot's chat color. Current color is pink.
        bot:SayMessage(string.format("This is doctorSchuckbert09 and I give this game 18/20"),"All") -- What should the bot say when the server has been made?

    -- What should the bot say when the player has spawned?

        ChatService:GetChannel("All").SpeakerJoined:connect(function(speaker)
        spawn(function()    
            wait(1.99925) -- Reasonable time? Dunno.
            bot:SayMessage(string.format("This is doctorSchuckbert09 and I give this game 18/20"),"All") -- %s is the definitions for the player. You can configure this to 

                                                                      -- want different messages, you'd have to make a string table for 
                                                                      -- that. For now, it does a pre - set message.
        end)
    end)
end

return Run

But I cant find ChatModules halp me!!