phenaproxima → credited upperholme → .
So for a relatively non-technical user who has downloaded and installed the release candidate as promoted, and got this error, what can I do to get my site working?
I'm now seeing at https://drupal-cms.ddev.site/admin: Error: Call to a member function getPath() on null in drupal_cms_installer_theme_registry_alter() (line 286 of profiles/drupal_cms_installer/drupal_cms_installer.profile).
upperholme → created an issue.
Added an explanatory note under the 'using composer' subheading to clarify that composer should be used to delete the codebase only after the module has been uninstalled via the admin interface. Prior to this the implication of the article was that the user could use any of three approaches to uninstall a module.