找不到类别“ Google\Cloud\Storage\StorageClient”

use Google\Cloud\Storage\StorageClient;
require __DIR__ . '\vendor\autoload.php';

$storage = new StorageClient();

这是我的代码。这里我在Windows上安装了composer并出现以下错误：-

That as my code.Here I have installed composer on windows and getting following error:-

致命错误：在 C：\xampp\htdocs\fingertips\application\controllers\中找不到类'Google\Cloud\StorageClient' 214

Fatal error: Class 'Google\Cloud\StorageClient' not found in C:\xampp\htdocs\fingertips\application\controllers\teacher.php on line 214

即使在使用composer运行命令以使用Google Cloud api之后，也没有任何反应。

And even after running commands with composer to use google cloud api's, then also nothing is happening.

在cmd上，当我运行此命令时， composer require google / cloud-storage，我得到了这个

On cmd, when I am running this, "composer require google/cloud-storage" ,I am getting this

使用版本^ 1.3的google / cloud-storage
./composer.json已更新
加载包含软件包信息的composer存储库
更新依赖项（包括require- dev）
无需安装或更新
生成自动加载文件

Using version ^1.3 for google/cloud-storage ./composer.json has been updated Loading composer repositories with package information Updating dependencies (including require-dev) Nothing to install or update Generating autoload files

我运行了很多命令来解决此问题，但没有成功。有人请帮忙解决问题

I have run so many commands to fix this but didnt get anything in success.Can somebody please help what went wrong