POST“ base64图像字符串”在iOS 11中不起作用

Question

以前，我使用AFNetworking POST方法将“ base64imagestring”保存在服务器上，并且工作正常，但是从最近几天开始，我遇到了一些问题。我没有更改请求代码中的任何内容，但无法在服务器上上传base64imagestring。

Error Domain=NSCocoaErrorDomain Code=3840 "JSON text did not start with array or object and option to allow fragments not set." UserInfo={NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set., NSUnderlyingError=0x281f25170 {Error Domain= example.com Code=-1011 "Request failed: unacceptable (406)" UserInfo=<NSHTTPURLResponse: 0x2811e4be0> { URL: http://example.com/Api/image_save.php } { Status Code: 406, Headers {
    Connection =     (
        "Keep-Alive"
    );
    "Content-Length" =     (
        226
    );
    "Content-Type" =     (
        "text/html; charset=iso-8859-1"
    );
    Date =     (
        "Wed, 29 May 2019 07:11:52 GMT"
    );
    "Keep-Alive" =     (
        "timeout=5, max=75"
    );
    Server =     (
        Apache
    );
} }}}}