Amazon s3 后端配置无效。可读卷不可用

我想将AmazonS3文件系统添加到我的插件中。因此，我在我的应用程序中安装了以下插件：

composer require league/flysystem 
composer require league/flysystem-aws-s3-v3 
composer require creocoder/yii2-flysystem 
composer require mihaildev/yii2-elfinder 
composer require mihaildev/yii2-elfinder-flysystem

然后我添加了以下配置：

'components' => [
   // ... 
    'fs' => [
        'class' => 'common\components\AwsS3Filesystem',
        'key' => '{MYAMAZONKEY}',
        'secret' => '{MYAMAZONSECRET}',
        'bucket' => '{MYBUCKET}',
        'region' => 'us-east-1',
    ],
        // ...
],

'controllerMap' => [
        'elfinder' => [
            'class' => 'mihaildev\elfinder\PathController',
            'access' => ['@'],
            'disabledCommands' => ['netmount'],
            'root' => [
                'class' => 'mihaildev\elfinder\flysystem\Volume',
                'component' => 'fs'
            ],
        ]
    ],

然后是我的elfinder配置：

'components' => [
   // ... 
    'fs' => [
        'class' => 'common\components\AwsS3Filesystem',
        'key' => '{MYAMAZONKEY}',
        'secret' => '{MYAMAZONSECRET}',
        'bucket' => '{MYBUCKET}',
        'region' => 'us-east-1',
    ],
        // ...
],

'controllerMap' => [
        'elfinder' => [
            'class' => 'mihaildev\elfinder\PathController',
            'access' => ['@'],
            'disabledCommands' => ['netmount'],
            'root' => [
                'class' => 'mihaildev\elfinder\flysystem\Volume',
                'component' => 'fs'
            ],
        ]
    ],

毕竟，当我打开elfinder窗口时，会发生以下错误：

Invalid backend configuration.
Readable volumes not available.
{"error":["errConf","errNoVolumes"],"debug":["Driver \"elFinderVolumeFlysystem\" does not exist"]}

事实上，我遵循了这一点，但它没有帮助。我想不出有什么问题。谢谢你的帮助