>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #2944501. --> Reported by: [danrod](https://www.drupal.org/user/19150) >>> <p>When creating a custom calendar view, I often get this warning when my view is not properly configured:</p> <blockquote><p>\Drupal\calendar\Plugin\views\style\CalendarStyle: A calendar date argument is required when using the calendar style, but it is missing or is not using the default date.</p></blockquote> <p><img src="https://www.drupal.org/files/issues/warning_19.png" alt="Warning problem"></p> <p>It would be better to tell the user that you need to create a contextual filter on Views &gt; Advanced &gt; Contextual Filters (Add) for the view to work (or something like that).</p> > Related issue: [Issue #1272976](https://www.drupal.org/node/1272976)