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On a fairly out-of-the-box Opigno, I am getting the following error
\Drupal\calendar\Plugin\views\style\CalendarStyle: A calendar date argument is required when using the calendar style, to add a date argument in a view, please go to Advanced > Contextual Filters on the views configuration panel.
Does anyone know what can be done about this?
Update
Ok, so I should not have updated Drupal core separately ...
Yes, you should not update
Yes, you should not update Drupal core separately, you should update Opigno using the Opigno LMS distribution