Error when adding block to group

When adding a block to a group, the following errors get thrown:

    Notice: Undefined index: image_path in Drupal\layout_builder_browser\Form\BlockListingForm->submitForm() (line 231 of modules/contrib/layout_builder_browser/src/Form/BlockListingForm.php).

    Drupal\layout_builder_browser\Form\BlockListingForm->submitForm(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: 593)
    Drupal\Core\Form\FormBuilder->processForm('layout_builder_browser_block_listing', Array, Object) (Line: 321)
    Drupal\Core\Form\FormBuilder->buildForm(Object, Object) (Line: 91)
    Drupal\Core\Controller\FormController->getContentResult(Object, Object)
    call_user_func_array(Array, Array) (Line: 123)
    Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 573)
    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: 151)
    Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 68)
    Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 57)
    Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 47)
    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: 47)
    Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 52)
    Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
    Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 708)
    Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

    Notice: Undefined index: image_alt in Drupal\layout_builder_browser\Form\BlockListingForm->submitForm() (line 232 of modules/contrib/layout_builder_browser/src/Form/BlockListingForm.php).

    Drupal\layout_builder_browser\Form\BlockListingForm->submitForm(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: 593)
    Drupal\Core\Form\FormBuilder->processForm('layout_builder_browser_block_listing', Array, Object) (Line: 321)
    Drupal\Core\Form\FormBuilder->buildForm(Object, Object) (Line: 91)
    Drupal\Core\Controller\FormController->getContentResult(Object, Object)
    call_user_func_array(Array, Array) (Line: 123)
    Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 573)
    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: 151)
    Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 68)
    Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 57)
    Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 47)
    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: 47)
    Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 52)
    Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
    Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 708)
    Drupal\Core\DrupalKernel->handle(Object) (Line: 19)