Ray Web UI's Memory dashboard stuck Loading

Problem:

A workspace attached to a Ray cluster is running but the "Memory" tab in the Ray Web UI is stuck on "Loading": 

Background:

The Ray Web UI is a third-party webapp that is loaded into the workspace, similarly to the way a Jupyter Notebook webapp is a third-party webapp that can be loadeds into a workspace. 

This "Memory" tab is intended to summarize usage of the “ray object store” for use when debugging where memory is being allocated to in the computation that you are running.

Resolution:

This is a bug that is occurring outside of Domino since it is a bug within Ray.   In certain usage of Ray we've seen values return however, so the bug is a bit mercurial.  The bug is described here - https://github.com/ray-project/ray/issues/17663 and unfortunately will need to be fixed by Ray developers, then you can ensure your Compute environment is using the updated Ray version.