My app runs perfectly fine on my locahost in Chrome. I took care of port forwarding, and I can access the remote URL, but the app freezes on ‘connecting’. Please see screen shot.
Thanks @pybokeh for your kind follow-up. This could be the same issue indeed. The problem is that I don’t have this file “config.toml” on my system for some reason. Where is it located? I am using Ubuntu 16.04 with Python 3.6.8.