PHP Core Warning – yii\base\ErrorException

$_GET = [
    'slug' => 'serena-zoli',
    'modelClass' => 'app\\models\\muv\\article\\FuvAuthor',
    'page' => '32',
    'per-page' => '10',
];

$_COOKIE = [
    'last-article' => 'c097a295b03fc12b4f4e81cc80785d08bc9f73f53334232eb0bd3359e6f09a8ea:2:{i:0;s:12:"last-article";i:1;i:10864;}',
    'identity-fe' => 'cfmgepn215g39m9ai3bue2rkk0',
    '_csrf' => '6b1cf19e12edf4ead63fa98786289f3c11aec6bdbed6abd1d7ac6fd47704cfb5a:2:{i:0;s:5:"_csrf";i:1;s:32:"Vmt2TmFrRmVKNTR1Vk94aHFYZWRQeGdP";}',
];

$_SESSION = [
    '__flash' => [],
    '__returnUrl' => '/magazine/giornalisti/serena-zoli?page=32&per-page=10',
];