skeeks\cms\models\CmsSite::createTreeAfterInsert PHP Method

    public function createTreeAfterInsert(Event $e)
    {
        $tree = new Tree(['name' => 'Главная страница', 'site_code' => $this->code]);
        if (!$tree->save(false)) {
            throw new Exception('Failed to create a section of the tree');
        }
    }