Error.cause is never shown in our error banner, even when "more info" is clicked

[toloudis]

Description

We have volume loading errors and the cause field can sometimes have very specific data that identifies the type of error. But that field is never shown in the front end error banner. Seeing this info can greatly decrease debugging time.

Expected Behavior

When users click more info, we should show this detail too, so they can use it in a bug report for us.

Reproduction

A minimal example that exhibits the behavior.

Environment

Any additional information about your environment. E.g. OS version, python version, browser etc.