how do I fix the error: "Players.---.Backpack.Weight.LocalScript: attempt to call a Instance value?

All scripts and locations: https://gyazo.com/879cb3f8211ed47ea734d362457bdbbc

I am having an issue making a weight lifting simulator, I have fixed like 50 other errors however this is my last one.

https://gyazo.com/a99d096cee9dcad9bdd1968ab58eaed2 this is happening in the local script (located in the weight)

If it matter the other scripts are here:

ServerScriptService: (Remotes) https://gyazo.com/90152c071d6077058c826e64c1224921 (Stats) https://gyazo.com/5a35e8e6f3c9f6e2245fa0fcfffc68a7

Weight: Local Script: https://gyazo.com/15df19f96a704c884cab5cb7199b5582 Module(Lift) https://gyazo.com/3cc5eced6ebc2e9406320766d34f700e