How can I prevent this from happening?

I have a script that needs to get data from a model in ServerStorage but it keeps giving me this error: attempt to index a nil value

The script line is this:

for i,v in pairs(game:GetService("ServerStorage"):FindFirstChild("Data"):GetChildren()) do

Then it gets the data from it but sometimes it has nothing in it and it checks it any way returning a nil value and therefore returns an error. Do YOU know how to fix this?

if v then ... end

perhaps???

I think the problem here is that you don't have a statement that checks if Data exists. If Data doesn't exist but the script runs this line anyways, it will error because the script can't find Data! A way to fix this is to add an if statement checking if Data exists before running the code.

if game:GetService("ServerStorage"):FindFirstChild("Data") ~= nil then
	for i,v in pairs(game:GetService("ServerStorage"):FindFirstChild("Data"):GetChildren()) do

I hope this helps!