Dataview LIST and TASK are empty, even though my vault is not empty

@mnaoumov has a debug guide:

How to debug Obsidian Plugins - Share & showcase - Obsidian Forum

Also:

GitHub - chrisgrieser/obsidian-divide-and-conquer: An Obsidian plugin that provides commands for bulk enabling/disabling of plugins. Useful for debugging when you have many plugins.

A lot of the time, turning off all plugins and then—staring with Dataview—add them back one at a time until something stops Dataview from running.

And is Dataview in the main vault also up to date?

Afraid I know nothing of Linux, but I expect others will be able to help.