Redis获取的集合结果不能传递到blade视图里来显示？打印正常，传递到视图就不行了！

        $questions_pre = $this->questionRepository->getQuestionsFeed();
        $key = 'questions';
        foreach ($questions_pre as $question) {
            //将问题存放到集合中
            Redis::sadd($key,$question);
        }
        //获取集合元素总数(如果指定键不存在返回0)
        $nums = Redis::scard($key);
        if($nums>0){
            //从指定集合中获取数据
            $questions = collect(Redis::smembers($key));
        }
        dd($questions);