"Unable to cast value to Object" On Calling Remote Function In Script?

I'm getting this error message, "Unable to cast value to Object" when I try to call a Remote Function in a Script. I know I have to use a Local Script, but I can't seem to figure out how to call ".Touched" In a Local Script. It just doesn't work..

Script

local levelsHandler = require(game:GetService("ReplicatedStorage").LevelsHandler)

local circle = script.Parent.Parent.SpawnPad.Circle
local outline = script.Parent.Parent.SpawnPad.Outline

local isTouched = false

local function chooseRandom(dictionary)
    local list = {}

    for key, value in pairs(dictionary) do
        list[#list+1] = {key = key, value = value}
    end
    if #list == 0 then return end
    return list[math.random(#list)]
end

function OnTouch(part)
    local humanoid = part.Parent:WaitForChild("Humanoid")
    if (humanoid ~= nil) then
        if isTouched == false then
            isTouched = true

            circle.Color = Color3.fromRGB(38, 255, 0)
            outline.Color = Color3.fromRGB(38, 255, 0)

            local chosen = chooseRandom(levelsHandler)
            print("Selected Level: "..chosen.key)
            game.ReplicatedStorage.CreateLevel:InvokeClient(chosen.key) -- Error
        end
    end
end

script.Parent.Touched:Connect(OnTouch)