PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1765948681',
];

$_COOKIE = [
    'PHPSESSID' => 'pi8rnke71aquk4j5p66bauesc2',
    '_csrf' => '499b4def7f29a279bfbfcc71d421f85c00ed70dea4b79bdb247ac4cd19d3080da:2:{i:0;s:5:"_csrf";i:1;s:32:"H8kLBGJMgcipaFGrX872EvdkMJUQe9Ar";}',
    'topics-session' => '1765966156.933.15681.243265|d197bbbd1d400bd72372bc93068ad169',
];

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