Views FieldBase.php TypeError: Unsupported operand types: array + null

I have installed the module and installed Views module, too.
After I have saved the field, I get this error message.

TypeError: Unsupported operand types: array + null in Drupal\office_hours\Plugin\views\field\FieldBase::viewsFieldData() (line 81 of modules/contrib/office_hours/src/Plugin/views/field/FieldBase.php).
office_hours_field_views_data()
call_user_func_array() (Line: 400)
Drupal\Core\Extension\ModuleHandler->invoke() (Line: 193)
views_views_data() (Line: 236)
Drupal\views\ViewsData->Drupal\views\{closure}() (Line: 388)
Drupal\Core\Extension\ModuleHandler->invokeAllWith() (Line: 244)
Drupal\views\ViewsData->getData() (Line: 154)
Drupal\views\ViewsData->get() (Line: 1191)
Drupal\views\ViewExecutable->initQuery() (Line: 885)
Drupal\views\Plugin\views\display\DisplayPluginBase->getHandlers() (Line: 1055)
Drupal\views\ViewExecutable->_initHandler() (Line: 913)
Drupal\views\ViewExecutable->initHandlers() (Line: 2330)
Drupal\views\Plugin\views\display\DisplayPluginBase->preExecute() (Line: 1707)
Drupal\views\ViewExecutable->preExecute() (Line: 1642)
Drupal\views\ViewExecutable->executeDisplay() (Line: 81)
Drupal\views\Element\View::preRenderViewElement()
call_user_func_array() (Line: 111)
Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 797)
Drupal\Core\Render\Renderer->doCallback() (Line: 386)
Drupal\Core\Render\Renderer->doRender() (Line: 204)
Drupal\Core\Render\Renderer->render() (Line: 238)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 592)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 239)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare() (Line: 128)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
call_user_func() (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 58)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->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: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 704)
Drupal\Core\DrupalKernel->handle() (Line: 19)

I hope someone can help me. I can no longer uninstall the module either.
Thank you very much...

Drupal 10.1.8
PHP 8.1.27