Backpack won't show Tools Icons?

Hello Fellow Robloxians, I have just followed a tutorial on how to make a custom backpack Gui for my game and well as you can see my own custom tools i have made in blender don't seem to have an image appear in my backpack Gui. It shows Nothing :(

Here is the script for my gui if you need it

this is what i see

if ur putting a gui into the starterpack or the players packpack then thats the reason, i had the same issue that i couldnt see the tools because i accidently had a gui in my starterpack which replicated into my backpack