Steps to repro:
- Create content type
- Add List (text) field and populate required config options
- Create node of this content type
- View node
The error I saw was:
Drupal\Component\Plugin\Exception\PluginException: The plugin (list_default) did not specify an instance class. in Drupal\Component\Plugin\Factory\DefaultFactory::getPluginClass() (line 62 of /.../core/lib/Drupal/Component/Plugin/Factory/DefaultFactory.php).