Variable $app might not be defined.

Variable $app might not be defined.

Variable $app might not be defined.

Parameter #1 $defaults of class Atk4\Ui\App constructor expects array, string given.

Access to an undefined property Atk4\Ui\AbstractView::$text.

Parameter #1 $object of method Atk4\Ui\App::add() expects Atk4\Ui\AbstractView, array<int, string> given.

Method Atk4\MasterCrud\Demo\Client::init() overrides method Atk4\Data\Model::init() but is missing the #[\Override] attribute.

Property Atk4\MasterCrud\Demo\Invoice::$title_field has no type specified.

Method Atk4\MasterCrud\Demo\Invoice::init() overrides method Atk4\Data\Model::init() but is missing the #[\Override] attribute.