yii\base\ErrorException
Error

PHP Noticeyii\base\ErrorException

Trying to get property of non-object

$_GET = [
    'slug' => 'الملك-عبدالعزيز-بن-عبدالرحمن-بن-فيصل-آل-سعود-رحمه-الله-',
];

$_SESSION = [
    '_language' => 'en',
];