"A script has been running for a long time, and may be hanging." How to fix?

For some reason, I've been getting this error message that requires me to kill my script when I'm testing out my game. Here are the scripts:

local button = script.Parent.TextButton
local frame = script.Parent.Frame

local function findValue()
    local moneyCount = game.Players.LocalPlayer.MoneyCount
end

local function addMoney()
    moneyCount.Value = moneyCount.Value + 1
end

game.Players.PlayerAdded:Connect(findValue)
button.MouseButton1Click:Connect(addMoney)

local frame = script.Parent.Frame
local button = script.Parent.TextButton

function getMoney()
    frame:TweenPosition(UDim2.new(0.5,-100,0.5,-25),'Out','Quint',.5)
    wait(.75)
    frame:TweenPosition(UDim2.new(0.5,-100,10,-25),'In','Quint',.5)
end

button.MouseButton1Click:Connect(getMoney)

local gui = script.Parent
local display = gui.MoneyAmount
local money = game.Players.LocalPlayer.MoneyCount

while true do
    display.Text = money.Value
end

These are both local scripts. I have no idea what this error message means. Help would be appreciated!

EDIT: Another local script. This may be the problem.