Warning Icon - Custom App Building

I’m currently building a custom app for a project, and I’m still quite new to this type of development. I’ve run into a really frustrating issue that I can’t seem to solve.

There’s a large warning icon showing up on my pages, and no matter what I try, it just won’t disappear. I’m not sure what’s causing it or how to properly fix it.

Has anyone experienced something similar or knows how to resolve this issue? Any help or guidance would be greatly appreciated.

Thank you!

Is the warning icon appearing in the admin page? https://admin.shopify.com/store/<store>/apps/<app-name>.
Anything in the developer console?