Three.js Transparent Background

I know this might sound repeated, I googled it and found answers here about the background color such as this link (Transparent background with three.js), But that solution and some others did not work for my case.

I forked a codepen creation from someone else, and tried to adapt it to use it dynamically but I’m unable to remove the background even when setting alpha: true, setClearColor and scene.background = null into Scene instance.

I’m new in Three.js and I could not find the actual solution to my problem I’ve decided to post.

I tried debugging the camera angles thinking that might be the issue? – Still unsuccesful.

Here’s a Codepen link so you can check it out (it starts at Line 141)

Thank you