对象储存oss iOS 上传一直失败 返回-500

2017-08-28 16:48:34.310 BesiegedCity[15125:662931] [Verbose]: send request --------
2017-08-28 16:48:34.310 BesiegedCity[15125:674157] [Verbose]: start to intercept request
2017-08-28 16:48:34.311 BesiegedCity[15125:674157] [Verbose]: signing intercepting -
2017-08-28 16:48:34.311 BesiegedCity[15125:674157] [Debug]: string to sign: PUT

image/png
Mon, 28 Aug 2017 08:48:33 GMT
/wc-picture/headIcon
2017-08-28 16:48:34.311 BesiegedCity[15125:674157] [Debug]: start to build request
2017-08-28 16:48:34.312 BesiegedCity[15125:674157] [Debug]: resolved host wc-picture.oss-cn-shanghai.aliyuncs.com and get ip: (null)
2017-08-28 16:48:34.312 BesiegedCity[15125:674157] [Debug]: built full url: https://wc-picture.oss-cn-shanghai.aliyuncs.com/headIcon
2017-08-28 16:48:34.313 BesiegedCity[15125:674157] [Verbose]: buidlInternalHttpRequest -
method: PUT
url: https://wc-picture.oss-cn-shanghai.aliyuncs.com/headIcon
header: {

User-Agent = aliyun-sdk-ios/2.6.0/iOS/10.3.1/en_US,
Host = wc-picture.oss-cn-shanghai.aliyuncs.com,
Content-Type = image/png,
Authorization = OSS <your access key>:WuRKLGXfui+B4VHPhWkxHwOGayE=,
Date = Mon, 28 Aug 2017 08:48:33 GMT

}
2017-08-28 16:48:34.547 BesiegedCity[15125:674565] [Verbose]: did receive response: { URL: https://wc-picture.oss-cn-shanghai.aliyuncs.com/headIcon } { status code: 500, headers {

Server = AliyunOSS,
Content-Type = application/xml,
x-oss-server-time = 25,
Date = Mon, 28 Aug 2017 08:48:34 GMT,
x-oss-request-id = 59A3D8E296634A0ABC5D9C85,
Content-Length = 279,
Connection = keep-alive

} }
2017-08-28 16:48:34.548 BesiegedCity[15125:674566] [Error]: http error response: <?xml version="1.0" encoding="UTF-8"?>

InternalError
Please contact the server administrator, oss@service.aliyun.com
59A3D8E296634A0ABC5D9C85
wc-picture.oss-cn-shanghai.aliyuncs.com

2017-08-28 16:48:34.548 BesiegedCity[15125:674566] [Verbose]: current retry count: 0, retry type: 2
2017-08-28 16:48:34.548 BesiegedCity[15125:674566] objectKey: headIcon
2017-08-28 16:48:34.548 BesiegedCity[15125:674566] upload object failed, error: Error Domain=com.aliyun.oss.serverError Code=-500 "(null)" UserInfo={__name=Error, HostId=wc-picture.oss-cn-shanghai.aliyuncs.com, Message=Please contact the server administrator, oss@service.aliyun.com, Code=InternalError, RequestId=59A3D8E296634A0ABC5D9C85}