TypeError: WisskiSparqlResultRow::__construct(): Argument #1 ($entry) must be of type stdClass, null given

On which WissKI instance happened the incidence?

Dev Container

When does the issue occur?

Create entities

On which page or in which action carried out?

/wisski/create/

What exactly lead to the behaviour?

e.g. "Error occur on /admin/config/wisski/ontology when I try to import the ontology". I entered the the url of the ontology (http://erlangen-crm.org/211015/) and clicked on "load ontology".
Trying to create an entity.

What did you expect? Do you want to display, configure or save something?

e.g. "It should import the ontology in the triple store."
Create gracefully an entity.

What happened instead? Did the page crash, is there an error or did the action not take place?

e.g. "The were two error messages: Something went wrong in 'doQuery' for adapter "default"; "Something went wrong in 'directUpdate' for adapter "default"

TypeError: Drupal\wisski_salz\Plugin\wisski_salz\Engine\WisskiSparqlResultRow::__construct(): Argument #1 ($entry) must be of type stdClass, null given, called in /var/www/html/web/modules/custom/wisski/wisski_salz/src/Plugin/wisski_salz/Engine/WisskiSparqlResult.php on line 53 in Drupal\wisski_salz\Plugin\wisski_salz\Engine\WisskiSparqlResultRow->__construct() (line 22 of modules/custom/wisski/wisski_salz/src/Plugin/wisski_salz/Engine/WisskiSparqlResultRow.php).

Drupal\wisski_salz\Plugin\wisski_salz\Engine\WisskiSparqlResult->wrapEntry() (Line: 48)
Drupal\wisski_salz\Plugin\wisski_salz\Engine\WisskiSparqlResult->offsetGet() (Line: 2734)
Drupal\wisski_adapter_sparql11_pb\Plugin\wisski_salz\Engine\Sparql11EngineWithPB->addNewFieldValue() (Line: 3175)
Drupal\wisski_adapter_sparql11_pb\Plugin\wisski_salz\Engine\Sparql11EngineWithPB->writeFieldValues() (Line: 1530)
Drupal\wisski_core\WisskiStorage->doSaveFieldItems() (Line: 719)
Drupal\Core\Entity\ContentEntityStorageBase->doSave() (Line: 487)
Drupal\Core\Entity\EntityStorageBase->save() (Line: 804)
Drupal\Core\Entity\Sql\SqlContentEntityStorage->save() (Line: 370)
Drupal\Core\Entity\EntityBase->save() (Line: 298)
Drupal\inline_entity_form\Form\EntityInlineForm->save() (Line: 57)
Drupal\inline_entity_form\WidgetSubmit::doSubmit()
call_user_func_array() (Line: 109)
Drupal\inline_entity_form\ElementSubmit::doSubmit() (Line: 79)
Drupal\inline_entity_form\ElementSubmit::trigger()
call_user_func_array() (Line: 105)
Drupal\Core\Form\FormSubmitter->executeSubmitHandlers() (Line: 43)
Drupal\Core\Form\FormSubmitter->doSubmitForm() (Line: 589)
Drupal\Core\Form\FormBuilder->processForm() (Line: 321)
Drupal\Core\Form\FormBuilder->buildForm() (Line: 48)
Drupal\Core\Entity\EntityFormBuilder->getForm() (Line: 66)
Drupal\wisski_core\Controller\WisskiEntityController->add()
call_user_func_array() (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 627)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 121)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 183)
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: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 116)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 90)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 53)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 715)
Drupal\Core\DrupalKernel->handle() (Line: 19)