Amazon s3 当使用boto3.client（'；s3'；）.generate_presigned_post通过表单提交生成文件上载URL时，AWS发生错误

如本问题标题中所述，当使用boto3.client（'s3'）.generate_presigned_post根据生成上传URL并将函数响应注入以下表单时：

 <form class="s3-upload" action="URL_VALUE" method="post" enctype="multipart/form-data">
    <input type="hidden" name="key" value="VALUE"/>
    <input type="hidden" name="AWSAccessKeyId" value="VALUE"/>
    <input type="hidden" name="policy" value="VALUE"/>
    <input type="hidden" name="signature" value="VALUE"/>
    <input type="hidden" name="success_action_redirect" value="VALUE"/>
    <input type="file" name="file" class="upload-input">
    <p class="drag-text">Drag your file here or click in this area.</p>
    <button id="uploadS3" type="submit" title="">Upload</button>
 </form>

将文件拖到此处或单击此区域
 <form class="s3-upload" action="URL_VALUE" method="post" enctype="multipart/form-data">
    <input type="hidden" name="key" value="VALUE"/>
    <input type="hidden" name="AWSAccessKeyId" value="VALUE"/>
    <input type="hidden" name="policy" value="VALUE"/>
    <input type="hidden" name="signature" value="VALUE"/>
    <input type="hidden" name="success_action_redirect" value="VALUE"/>
    <input type="file" name="file" class="upload-input">
    <p class="drag-text">Drag your file here or click in this area.</p>
    <button id="uploadS3" type="submit" title="">Upload</button>
 </form>

上传

我从AWS收到以下错误：您提供的AWS访问密钥Id在我们的记录中不存在。

 <form class="s3-upload" action="URL_VALUE" method="post" enctype="multipart/form-data">
    <input type="hidden" name="key" value="VALUE"/>
    <input type="hidden" name="AWSAccessKeyId" value="VALUE"/>
    <input type="hidden" name="policy" value="VALUE"/>
    <input type="hidden" name="signature" value="VALUE"/>
    <input type="hidden" name="success_action_redirect" value="VALUE"/>
    <input type="file" name="file" class="upload-input">
    <p class="drag-text">Drag your file here or click in this area.</p>
    <button id="uploadS3" type="submit" title="">Upload</button>
 </form>

该应用程序在AWS Fargate上的docker中运行，并附加了AWS角色。这可能与解决方案有关，因为整个功能在我的本地机器上运行良好。此外，所有其他与S3（以及SQS）相关的AWS操作都可以与AWS Fargate/AWS角色设置配合使用。我期待着任何关于做什么的建议

 <form class="s3-upload" action="URL_VALUE" method="post" enctype="multipart/form-data">
    <input type="hidden" name="key" value="VALUE"/>
    <input type="hidden" name="AWSAccessKeyId" value="VALUE"/>
    <input type="hidden" name="policy" value="VALUE"/>
    <input type="hidden" name="signature" value="VALUE"/>
    <input type="hidden" name="success_action_redirect" value="VALUE"/>
    <input type="file" name="file" class="upload-input">
    <p class="drag-text">Drag your file here or click in this area.</p>
    <button id="uploadS3" type="submit" title="">Upload</button>
 </form>