When importing "Redirects for deleted entities" a serialization exception turns up

Problem/Motivation

I've imported the model from the following ecaguide page: https://ecaguide.org/library/test%20models/redirects_for_deleted_entities/
on import i ran into the following error:

The website encountered an unexpected error. Please try again later.

Exception: Serialization of 'Symfony\Component\HttpFoundation\File\UploadedFile' is not allowed in serialize() (line 74 of modules/contrib/danse/modules/form/src/Payload.php).
Drupal\danse_form\Payload->prepareArray() (Line: 35)
Drupal\danse\PayloadBase->toArray() (Line: 55)
Drupal\danse\Entity\Event::preCreate(Object, Array) (Line: 87)
Drupal\Core\Entity\ContentEntityStorageBase->create(Array) (Line: 1143)
Drupal\Core\Entity\ContentEntityBase::create(Array) (Line: 327)
Drupal\danse\PluginBase->createEvent('submit', 'eca_import', Object) (Line: 47)
Drupal\danse_form\Plugin\Danse\Form->createFormEvent('submit', Array, Object) (Line: 45)
danse_form_submit_event(Array, Object)
call_user_func_array('danse_form_submit_event', Array) (Line: 114)
Drupal\Core\Form\FormSubmitter->executeSubmitHandlers(Array, Object) (Line: 52)
Drupal\Core\Form\FormSubmitter->doSubmitForm(Array, Object) (Line: 595)
Drupal\Core\Form\FormBuilder->processForm('eca_import', Array, Object) (Line: 323)
Drupal\Core\Form\FormBuilder->buildForm(Object, Object) (Line: 73)
Drupal\Core\Controller\FormController->getContentResult(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 580)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 169)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 81)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 50)
Drupal\ban\BanMiddleware->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 713)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
<h4 id="summary-steps-reproduce">Steps to reproduce</h4>

but when i reload the site and check the eca models list page the model is available there and i can also access and edit it in bpmn.

(on Drupal 9.5.1, php 8.1.13)

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes