Laravel HTTP状态代码“1”无效错误

I'm trying to access my url at: http://localhost/app/public/questions/1

My Routes

 $this->get('/questions/{question_id}','questionController@show');

My controller

public function show($question_id) {

    $showQuestion=questions::findOrFail($question_id);
    return redirect('questions',compact('showQuestion'));
}

For some reason I'm getting this error

InvalidArgumentException in Response.php line 458:
The HTTP status code "1" is not valid.

What could be the problem?

I guess you are trying to return a view

public function show($question_id) {

    $showQuestion=questions::findOrFail($question_id);
    return view('questions')->with('question', $showQuestion);
}

Source

After having something similar myself, maybe you should be using:

return redirect('questions')->with('showQuestion', $showQuestion);