We have Dremio running on a server and this error always comes up in Dremio’s UI:
There was an issue communicating with Dremio.
Your Internet connection may be offline, or WebSockets to Dremio are being blocked.
It does not seem to affect the functioning of Dremio (one can still log in, run queries, save views, etc.), however it would be nice to understand where does it come from and how to fix it.