PHP Core Warning – yii\base\ErrorException

$_GET = [
    'page' => '124',
];

$_COOKIE = [
    'PHPSESSID' => 'q2c46oatansr3a36lh6b3vt03f',
    '_csrf' => 'aa298a618c54b6296e90fe1d5187441473ce2530b0d4ce14a3e786e9aae6fd03a:2:{i:0;s:5:"_csrf";i:1;s:32:"y2cPxczw6UQ1_bLgrPjd9H8Xm0ssy5AH";}',
];

$_SESSION = [
    '__flash' => [],
];