Laravel：无法在公共目录中上传图像失败

Question

我在本地上传图片中的功能在服务器发生故障时向公众显示，并给我这条消息Unable to write in the "/var/www/html/media/public/images" directory 这里是我的控制器

 public function store(Request $request)
{
    $image = $request->file('image');
    if (is_null($image)) {
        $creator = new Content_form([
            'media_id' => $request->get('media_name'),
            'content_title' => $request->get('content_title'),
            'content_description' => $request->get('content_description'),
            'date_occured' =>$request->get('date_occured'),
            'page_number' => $request->get('page_number'),
            'image' => $image,
        ]);
        $creator->save();

请协助