PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790851100',
];

$_COOKIE = [
    'topics-session' => '1790854133.84.16480.349651|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'fkgei90koruo7nd3v5f8ag6v55',
    '_csrf' => '92dc63577435acc28535469451e6b3063db7cad70aabe7f29a671acc76a82b00a:2:{i:0;s:5:"_csrf";i:1;s:32:"x6xdb1rdSaMF2LNyGwN0l7S-7qzOgb0L";}',
];

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