Embedded App stuck on Connecting

Hi,

I’ve got a streamlit app that is running behind an SSL reverse proxy that I’m trying to embed in Microsoft Teams. I think Teams is basically embedding the app in an iFrame but I’m not completely sure. The app works fine from Chrome and Teams can start loading the application but it gets stuck on “Please wait…” and it says “CONNECTING” in the top right. I’m not sure how to debug what stage is being stopped to try to track down the issue.

Thanks!