Upload pano Image using street View Publish API

When I am making upload using the the given street View API

Request an Upload URL
        $ curl --request POST \
        --url 'https://streetviewpublish.googleapis.com/v1/photo:startUpload?key=YOUR_API_KEY' \
        --header 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
        --header 'Content-Length: 0'

Upload the photo bytes to the Upload URL
        $ curl --request POST \
        --url 'UPLOAD_URL' \
        --upload-file 'PATH_TO_FILE' \
        --header 'Authorization: Bearer YOUR_ACCESS_TOKEN'

But its not Working..

Its giving me the error No file found in request.

Can anybody please help me regarding this ..

Thank you in Advance.

To Get the upload URL I solved By this way

$cur_upload_url = curl_init();

  curl_setopt_array($cur_upload_url, array(

   CURLOPT_URL => "https://streetviewpublish.googleapis.com/v1/photo:startUpload?key=XXXXXXXXXXX" ,
   CURLOPT_RETURNTRANSFER => true,
   CURLOPT_ENCODING => "" ,
   CURLOPT_CUSTOMREQUEST => "POST",
   CURLOPT_HTTPHEADER => array(
     "authorization: Bearer $access_token",
        "content-type: application/json",
        "Content-Length: 0"
        ), 
  ));

  $response = curl_exec($cur_upload_url);
  $re = '/https?:\/\/[^"]*/';
  $str = $response;
  preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0);
  $upload_url = $_SESSION['UploadRef'] = $matches[0][0];

  echo $upload_url;

Upload the photo bytes to the Upload URL

$cmd = exec('curl --request POST \--url "'. addslashes($upload_url) .'" \--upload-file "'.$imagePath.'" \--header "Authorization: Bearer '. addslashes($access_token) .'" ');

Then Uplaod the meta data of photo

$curl_meta = curl_init();

  curl_setopt_array($curl_meta, array(
    CURLOPT_URL => "https://streetviewpublish.googleapis.com/v1/photo?key=XXXXXXXXXXXXXXXX",
    CURLOPT_CUSTOMREQUEST => "POST",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POSTFIELDS => '{
                    "uploadReference":
                    {
                      "uploadUrl": "'.$upload_url.'"
                    },
                    "pose":
                     {
                       "heading": 95.0,
                       "latLngPair":
                       {
                         "latitude": '.$latVal.',
                         "longitude": '.$langVal.'
                       }
                    },
                    "captureTime":
                    {
                      "seconds":  '.$time_stamp.'
                    },
                  }',

    CURLOPT_HTTPHEADER => array(
       "authorization: Bearer $access_token",
       "content-type: application/json"
    ),

  ));


      $response_meta = curl_exec($curl_meta);
      $response_json = json_decode($response_meta, true);
      // $photoID = $response_json['photoId']['id'];
      // echo $photoID;


      if(curl_errno($curl_meta)){
        // this would be your first hint that something went wrong
        die('Couldn\'t send request: ' . curl_error($curl_meta));
      }else{
        //check the HTTP status code of the request.
        $resultStatus = curl_getinfo($curl_meta, CURLINFO_HTTP_CODE);
        if($resultStatus != 200){
          die('Request failed: HTTP status code: ' . $resultStatus);
        }else{
          $photoID = $response_json['photoId']['id'];
          //insert google publish information into db table

        }

      }



      curl_close($curl_meta);

From here you will get the photo ID.

After getting the Photo iD publish is successful.