>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3253934. --> Reported by: [jurgenhaas](https://www.drupal.org/user/168924) >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>The method <code>\Drupal\danse\PluginBase::createEvent</code> may return NULL which causes some other methods to fail, because the return what they receive from here but declare to return EventInterface.</p>