Error

PHP Noticeyii\base\ErrorException

Undefined index: render_data

$_GET = [
    'lang' => 'az',
    'year' => '2018',
    'audience' => 'buraxilis-9',
    'inner' => 'dinamika-s%C4%B1naq',
];

$_SESSION = [
    '__flash' => [],
    'language.lang' => 'az',
    'usid' => '66056b18bd7701711631128',
];