Object Transparency Issue

Hello! I'm having an issue with the transparency of an object i made. As you can see from the picture its not the whole object it's just the little black spout at the bottom and parts of the lid at the top while the whole glass structure and what's inside is fine. It also looks completely fine when i import it into sims4studio. The object is cloned from the coffee machine, maybe that's causing the transparency issue? Can someone take a look at it and help me figure out what's wrong?

Blender File and package link: drive.google.com/drive/folders/1jy_fr2GCMX8MGw8zVOWZfSoi7uWZCFy-?usp=share_link