The plugin has just undergone a significant update.
https://github.com/paviliondev/discourse-layouts/commit/a47cf304684baac5f380ba25a49c86f33858159d
You can now add theme components as widgets (in addition to plugins). I’ve updated the widget you’ve been using to support v0.2
https://github.com/angusmcleod/layouts-topic-list/commit/548503d6c01622afe5ca17fc63da343d4ab7ba5d
However I would recommend the new theme version of the same widget (with some functionality improvments and changes)
https://github.com/paviliondev/layouts-topic-lists-widget
Generally the plugin is moving away from using plugins for widgets to using themes. Full documentation to follow in the next day or so.
Note that the plugin now has support for group-specific permissions, so make sure this is set in /admin/layouts.
This plugin will also soon be moving to the same update schedule as our other plugins; see further: