Echo UI app doesn't start on cloud if the dependencies are not installed locally.

[manskx]

In lightning 1.8 release, it introduced functionality to start an app on the cloud without installing the dependencies locally. But it doesn't work with the Eco app.

It might be a bug in the framework, more investigation is required.

How to reproduce ?

pip install ligntning
git clone git@github.com:Lightning-AI/LAI-Echo-App.git
cd LAI-Echo-App
lightning run app app.py --cloud

Expected behavior:
The app starts on the cloud with a functional UI. (the UI return 502)

[alecmerdler]

@manskx I don't believe this is related to dependencies. In the steps to reproduce, you didn't do the necessary steps to build the frontend (see the README.md). That could be why the UI is responding with HTTP 502.