WSOD when trying to add new field to content type

Problem/Motivation

I am very interested in testing this module with Drupal 11.1.5, but unfortunately I cannot add a new field of type type ".odt file importer", because a WSOD comes up when I click on "add field" in any content type:

TypeError: Cannot access offset of type Drupal\Core\StringTranslation\TranslatableMarkup in isset or empty in Drupal\Core\Plugin\DefaultPluginManager->doGetDefinition() (line 45 of /var/www/vhosts/.../core/lib/Drupal/Component/Plugin/Discovery/DiscoveryTrait.php).