Error: Call to a member function id() on null

Problem/Motivation

A question is submitted for moderation, I go to the admin page to approve it, and I get this error.
Error: Call to a member function id() on null in Drupal\questions_answers\Entity\Question->getEntity() (line 262 of /var/www/store/web/modules/contrib/questions_answers/src/Entity/Question.php)

Proposed resolution

My temporary solution is to replace line 262 of Question.php with return \Drupal::entityTypeManager()->getStorage($this->get('bundle')->value)->load($this->get('entity_id')->target_id);