>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3304860. --> Reported by: [lauriii](https://www.drupal.org/user/1078742) >>> <p>This theme has been removed from core in version 10. Please change the namespace for the contrib project drupal/bartik instead of drupal/bartik-bartik, and drupal/seven instead of drupal/seven-seven by making a change in the composer facade.</p> <p>Projects: <a href="https://www.drupal.org/project/bartik">https://www.drupal.org/project/bartik</a> and Project: <a href="https://www.drupal.org/project/seven">https://www.drupal.org/project/seven</a></p>