Error: Call to a member function get() on null

Same config as above but on Core: 9.5.9 I get the following.

The website encountered an unexpected error. Please try again later.
Error: Call to a member function get() on null in Drupal\stripe_webform\Plugin\WebformHandler\StripeWebformHandler->postSave() (line 235 of modules/contrib/stripe_webform/src/Plugin/WebformHandler/StripeWebformHandler.php).
Drupal\stripe_webform\Plugin\WebformHandler\StripeWebformHandler->postSave(Object, , NULL) (Line: 2765)
Drupal\webform\Entity\Webform->invokeHandlers('postSave', Object, , NULL) (Line: 1212)
Drupal\webform\WebformSubmissionStorage->invokeWebformHandlers('postSave', Object, ) (Line: 1120)
Drupal\webform\WebformSubmissionStorage->doPostSave(Object, ) (Line: 523)
Drupal\Core\Entity\EntityStorageBase->save(Object) (Line: 804)
Drupal\Core\Entity\Sql\SqlContentEntityStorage->save(Object) (Line: 983)
Drupal\webform\WebformSubmissionStorage->save(Object) (Line: 339)
Drupal\Core\Entity\EntityBase->save() (Line: 913)
Drupal\webform\Entity\WebformSubmission->save() (Line: 2002)
Drupal\webform\WebformSubmissionForm->save(Array, Object)
call_user_func_array(Array, Array) (Line: 114)
Drupal\Core\Form\FormSubmitter->executeSubmitHandlers(Array, Object) (Line: 52)
Drupal\Core\Form\FormSubmitter->doSubmitForm(Array, Object) (Line: 597)
Drupal\Core\Form\FormBuilder->processForm('webform_submission_become_an_awid_free_organization_add_form', Array, Object) (Line: 325)
Drupal\Core\Form\FormBuilder->buildForm(Object, Object) (Line: 48)
Drupal\Core\Entity\EntityFormBuilder->getForm(Object, 'add') (Line: 1257)
Drupal\webform\Entity\Webform->getSubmissionForm() (Line: 77)
Drupal\webform\Controller\WebformEntityController->addForm(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: 718)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

Uppon some tinkering with the module, what solves the issue is the following:
Drupal\stripe_webform\Plugin\WebformHandler\StripeWebformHandler->postSave() (line 235)

public function postSave(WebformSubmissionInterface $webform_submission, $update = TRUE) {
    // If update do nothing
    if ($update) {
      return;
    }

   // Added this condition
   if (!is_object($this->configFactory)) {
     return;
   }

    $uuid = $this->configFactory->get('system.site')->get('uuid');

    $config = $this->configFactory->get('stripe.settings');

It would probably be better to get the Drupal service instead of returning, and maybe do it in a constructor or something.

   // Make sure config factory exists.
   if (!isset($this->configFactory)) {
     $this->configFactory = \Drupal::configFactory();
   }

I was gonna open an MR to fix this, but a fix was already committed.