ArduinoHttpClient with Headers for sending file

Hi, I tried to send an image from ESP32CAM to web by ArduinoHttpClient.h and SIM800L . But it does not work . I used post with headers by changing the following code :

const char server[] = "Mysite.com";
const char resource[] = "/Mysystem/getdata_test.php";
String head = "--NEWSystem\r\nContent-Disposition: form-data; name=\"imageFile\"; filename=\"esp32-cam.jpg\"\r\nContent-Type: image/jpeg\r\n\r\n";
String tail = "\r\n--NEWSystem--\r\n";

uint32_t imageLen = img_len;  //fb->len;
uint32_t extraLen = head.length() + tail.length();
uint32_t totalLen = imageLen + extraLen;
http.beginRequest();
http.post(uploadPath);
http.sendHeader("Content-Type: multipart/form-data; boundary=NEWSystem");
http.sendHeader("Content-Length: " + String(totalLen));
http.sendHeader(head);
http.beginBody();
uint8_t *fbBuf = fb->buf;
size_t fbLen = fb->len;
for (size_t n = 0; n < fbLen; n = n + 1024) {
  if (n + 1024 < fbLen) {
    http.write(fbBuf, 1024);
    fbBuf += 1024;
  } else if (fbLen % 1024 > 0) {
    size_t remainder = fbLen % 1024;
    http.write(fbBuf, remainder);
  }
}
http.print(tail);

http.endRequest();
* / int status = http.responseStatusCode();
SerialMon.print(F("Response status code: "));
SerialMon.println(status);

This is result:

Go to send photo .....
Read from file: Connecting to server: Mysite.com
Response status code: -3
Response:

arduino-libraries / ArduinoHttpClient

ArduinoHttpClient with Headers for sending file #145