Warning: Undefined variable $table_data in Drupal\views\EntityViewsData - drupal-views

Question

With Drupal 9.4.5 I get the following error message on a cache clear:
'''Warning: Undefined variable $table_data in Drupal\views\EntityViewsData->mapFieldDefinition() (line 457 of C:\development\web\core\modules\views\src\EntityViewsData.php)
#0 C:\development\web\core\includes\bootstrap.inc(347): _drupal_error_handler_real(2, 'Undefined varia...', 'C:\development\...', 457)
#1 C:\development\web\core\modules\views\src\EntityViewsData.php(457): _drupal_error_handler(2, 'Undefined varia...', 'C:\development\...', 457)
#2 C:\development\web\core\modules\views\src\EntityViewsData.php(333): Drupal\views\EntityViewsData->mapFieldDefinition('webform_submiss...', 'notes', Object(Drupal\Core\Field\BaseFieldDefinition), Object(Drupal\Core\Entity\Sql\DefaultTableMapping), Array)
#3 C:\development\web\modules\contrib\webform\src\WebformSubmissionViewsData.php(16): Drupal\views\EntityViewsData->getViewsData()
#4 C:\development\web\core\modules\views\views.views.inc(180): Drupal\webform\WebformSubmissionViewsData->getViewsData()
#5 C:\development\web\core\modules\views\src\ViewsData.php(236): views_views_data()
#6 C:\development\web\core\lib\Drupal\Core\Extension\ModuleHandler.php(405): Drupal\views\ViewsData->Drupal\views{closure}(Object(Closure), 'views')
#7 C:\development\web\core\modules\views\src\ViewsData.php(244): Drupal\Core\Extension\ModuleHandler->invokeAllWith('views_data', Object(Closure))
#8 C:\development\web\core\modules\views\src\ViewsData.php(154): Drupal\views\ViewsData->getData()
#9 C:\development\web\core\modules\views\src\Plugin\Derivative\ViewsEntityRow.php(91): Drupal\views\ViewsData->get('block_content')
#10 C:\development\web\core\lib\Drupal\Component\Plugin\Discovery\DerivativeDiscoveryDecorator.php(101): Drupal\views\Plugin\Derivative\ViewsEntityRow->getDerivativeDefinitions(Array)
#11 C:\development\web\core\lib\Drupal\Component\Plugin\Discovery\DerivativeDiscoveryDecorator.php(87): Drupal\Component\Plugin\Discovery\DerivativeDiscoveryDecorator->getDerivatives(Array)
#12 C:\development\web\core\lib\Drupal\Core\Plugin\DefaultPluginManager.php(285): Drupal\Component\Plugin\Discovery\DerivativeDiscoveryDecorator->getDefinitions()
#13 C:\development\web\core\lib\Drupal\Core\Plugin\DefaultPluginManager.php(175): Drupal\Core\Plugin\DefaultPluginManager->findDefinitions()
#14 C:\development\web\core\lib\Drupal\Component\Plugin\Discovery\DiscoveryCachedTrait.php(22): Drupal\Core\Plugin\DefaultPluginManager->getDefinitions()
#15 C:\development\web\core\lib\Drupal\Core\Plugin\Factory\ContainerFactory.php(16): Drupal\Core\Plugin\DefaultPluginManager->getDefinition('data_field')
#16 C:\development\web\core\lib\Drupal\Component\Plugin\PluginManagerBase.php(83): Drupal\Core\Plugin\Factory\ContainerFactory->createInstance('data_field', Array)
#17 C:\development\web\core\modules\views\src\Plugin\views\display\DisplayPluginBase.php(817): Drupal\Component\Plugin\PluginManagerBase->createInstance('data_field')
'''
When I go to line 457 core\modules\views\src\EntityViewsData I see this:
foreach ($field_column_mapping as $field_column_name => $schema_field_name) {
// The fields might be defined before the actual table.
$table_data = $table_data ?: [];