Error

PHP Noticeyii\base\ErrorException

Trying to get property of non-object

$_GET = [
    'title' => '小知识',
    'type' => '学术中心πcture=/2016/1202/20161202112832267.jpg',
    'two' => 'MHC四聚体应用专题',
];

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