Switching widget from "Tagify" to "Tagify User List" produces an error

Steps to reproduce

1. On field which is using "Tagify" widget change widget to "Tagify User List".
2. Visit an entity edit form.
3. Error:

The website encountered an unexpected error. Try again later.

TypeError: Drupal\tagify_user_list\Element\EntityAutocompleteTagifyUserList::getTagifyDefaultValue(): Argument #2 ($info_label_template) must be of type string, null given, called in /var/www/html/web/modules/contrib/tagify/modules/tagify_user_list/src/Element/EntityAutocompleteTagifyUserList.php on line 193 in Drupal\tagify_user_list\Element\EntityAutocompleteTagifyUserList::getTagifyDefaultValue() (line 233 of modules/contrib/tagify/modules/tagify_user_list/src/Element/EntityAutocompleteTagifyUserList.php).
Drupal\tagify_user_list\Element\EntityAutocompleteTagifyUserList::valueCallback()
call_user_func_array() (Line: 1278)
Drupal\Core\Form\FormBuilder->handleInputElement() (Line: 999)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1069)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1069)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 579)
Drupal\Core\Form\FormBuilder->processForm() (Line: 326)
Drupal\Core\Form\FormBuilder->buildForm() (Line: 73)
Drupal\Core\Controller\FormController->getContentResult() (Line: 96)
Drupal\mercury_editor\Controller\MercuryEditorHtmlEntityFormController->getContentResult()
call_user_func_array() (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 638)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 121)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 181)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 38)
Drupal\mercury_editor\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741)
Drupal\Core\DrupalKernel->handle() (Line: 19)