Php 在AmazonS3中上传图像

我尝试使用本教程在s3中上载一个图像，但在访问此函数时出现错误：“localhost页面不工作：$uploader=$this->get（'kdm_storage.photo_uploader'）

services.xml

 <parameters>
    <parameter key="kdm_storage.photo_uploader.class">KDK\Controller\PhotoUploader</parameter>
</parameters>

<services>
    <service id="kdm_storage.photo_uploader" class="%kdm_storage.photo_uploader.class%">
        <argument type="service" id="photo_storage_filesystem" />
    </service>
</services>

 <parameters>
    <parameter key="kdm_storage.photo_uploader.class">KDK\Controller\PhotoUploader</parameter>
</parameters>

<services>
    <service id="kdm_storage.photo_uploader" class="%kdm_storage.photo_uploader.class%">
        <argument type="service" id="photo_storage_filesystem" />
    </service>
</services>

knp_gaufrette:
    adapters:
        photo_storage:
            amazon_s3:
                amazon_s3_id: kdm_storage.amazon_s3
                bucket_name:  %amazon_s3_bucket_name%
                create:       false
                options:
                    create: true
    filesystems:
        photo_storage:
            adapter:    photo_storage
            alias:      photo_storage_filesystem