🇳🇴Norway @fls

I was running into the same error but in my case only the absolute path worked with drupal10

#15 worked for me. the warning message seems gone

Hope, it is not all to redundant, but just in case it helps someone experiencing a similar issue with a missing uninstall button for Stable: After following all instructions above, I managed to figure out that a formerly installed subtheme of AT_core still depended on the theme Stable, although it was listed as uninstalled in the Drupal web interface Appearance. Only after uninstalling AT_core once more, but this time with drush (after upgrading to drush 11), the uninstall button for Stable appeared in Appearance. Thanks a lot!