Joseph Olstad
--- a/core/modules/views/views.post_update.php
+++ b/core/modules/views/views.post_update.php
 use Drupal\views\ViewEntityInterface;
 use Drupal\views\ViewsConfigUpdater;

+/**
+* Update boolean filter settings.
+*/
+function views_post_update_boolean_filter_accept_null(?array &$sandbox = NULL): void {
--- a/core/modules/views/src/Plugin/views/filter/BooleanOperator.php
+++ b/core/modules/views/src/Plugin/views/filter/BooleanOperator.php
     $this->value_value = $this->definition['title'];
   }

-    if (isset($this->definition['accept null'])) {
-      $this->accept_null = (bool) $this->definition['accept null'];
-    }
-    elseif (isset($this->definition['accept_null'])) {
-      $this->accept_null = (bool) $this->definition['accept_null'];
+   foreach (['accept_null', 'accept null'] as $key) {