Attempt to index nil with 'Value'?

while wait() do
	local crate = game.ReplicatedStorage.TableCrates.RainbowCrate:GetChildren()
	script.Parent.Image.Image = crate[script.Parent.Val.Value].Value
	script.Parent.Image.TableName.Text = crate[script.Parent.Val.Value].Name
end

Erroring line is line #3

Also this is a local script inside of a GUI.