attempt to concatenate string with table? line 27

local EventsFolder = game.ReplicatedStorage.CodeEvents
local RedeemCode = EventsFolder.RedeemCode
local FeedbackEvent = EventsFolder.Feedback
local MainFrame = script.Parent.HolderBG
local RedeemButton = script.Parent.HolderBG.Holder.RedeemBG.Redeem
local CodeBox = script.Parent.HolderBG.Holder.CodeBox
local PreviousCode = script.Parent.HolderBG.Holder.PreviousCode
local Close = script.Parent.HolderBG.Holder.Close
local player = game.Players.LocalPlayer
local Blur = Instance.new("BlurEffect",game.Workspace.CurrentCamera)
Blur.Name = "CodeGuiBlur"
Blur.Size = 0
local RunService = game:GetService("RunService")

RedeemButton.MouseButton1Click:Connect(function()
    local Redeemed = EventsFolder.RedeemCode:InvokeServer(CodeBox.Text)

    if Redeemed == true then
        print(player.Name.." has redeemed the "..CodeBox.Text.." code!")
    end
end)

FeedbackEvent.OnClientEvent:Connect(function(Message, MessageColor, TheCode, CodeAccepted)
    CodeBox.Text = Message
    CodeBox.TextColor3 = MessageColor
    if CodeAccepted == true then
        PreviousCode.Text = PreviousCode.Text .." "..TheCode
    end
end)

RunService.RenderStepped:Connect(function()
    if CodeBox.Text == "" then
        CodeBox.TextColor3 = Color3.fromRGB(255, 255, 255)
    end
end)