ossiossdk，在上传图片时，一直405，求助！！！

错误信息如下：
failed! Error message: Error Domain=ossException Code=405 "(null)" UserInfo={title=405 Not Allowed, center=nginx, h1=405 Not Allowed}
上传图片代码如下：
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        
        self.taskHandler = [self.ossUploadData uploadAndCallServerWithUploadCallback:^(BOOL isSuccess, NSData *data, NSError *error) {
            NSLog(@"%@", [self.ossUploadData.connection.currentRequest.URL.absoluteString stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]);
            if (isSuccess) {
                NSLog(@"suceess!");
                NSString *imageUrl = [self.ossUploadData getResourceURL:self.accessKey andExpire:MAXFLOAT];
                if (success) {
                    success(imageUrl);
                }
            } else {
                NSLog(@"failed! Error message: %@", error);
                if (failture) {
                    failture(error);
                }
            }
        } withProgressCallback:^(float progressFloat) {
            NSLog(@"current progress: %f", progressFloat);
            if (progress) {
                progress(progressFloat);
            }
        }];
    });