What is the reason for the AppWidgets image upload error in VK?

Question

PHP

Everything works, but at the end I get [api] request appWidgets.saveGroupImage failed (code=129 msg='Invalid photo: file not found, from upl_855432?act=app_widget_image')
and I can't figure out how to solve the problem
Picture in 24x24 resolution

<?php


  $upl_url = vk_api_call('appWidgets.getGroupImageUploadServer', array(
  'image_type' => "24x24"));
  $link = $upl_url['upload_url'];

    $lala = dirname(__FILE__)."/online.jpg";
    $cfile = curl_file_create($lala,'image/jpeg','online.jpg');
     
    $curl=curl_init();
      curl_setopt_array($curl, array(
        CURLOPT_RETURNTRANSFER => 1,
        CURLOPT_URL => $link,
        CURLOPT_POST => 1,
        CURLOPT_POSTFIELDS => array("photo" => $cfile)
      ));


  $response = curl_exec($curl); 
  
  $res = json_decode($response, true);
  $mem =$res['hash'];
  $memimage =$res['image'];
print_r($res); 

  $finish = vk_api_call('appWidgets.saveGroupImage', array(
  'hash' => $mem, 'image' => $memimage ));
  print_r($finish); 


function vk_api_call($method, $params = array())
{
  return vk_call($method, "ТОКЕН", $params);
}

function vk_call($method, $token, $params = array())
{
  if(!isset($params['lang'])) {
    $params['lang'] = "ru";
  }
  
  if(!isset($params['v'])) {
    $params['v'] = "5.80";
  }
  
  if(!isset($params['access_token'])) {
    $params['access_token'] = $token;
  }
  
  $curl = curl_init();
  curl_setopt($curl, CURLOPT_URL, "https://api.vk.com/method/".$method);
  curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($curl, CURLOPT_POST, true);
  curl_setopt($curl, CURLOPT_POSTFIELDS, $params);
  curl_setopt($curl, CURLOPT_TIMEOUT, 10);
  $response = curl_exec($curl);
  curl_close($curl);
  
  if($response === false) {
    return false;
  }
  
  $data = json_decode($response, true);
  
  if($data === false) {
    return false;
  }
  
  if(!isset($data['response']))
  {
    logs("[api] request ".$method." failed (code=".$data['error']['error_code']." msg='".$data['error']['error_msg']."')");
    return false;
  }
  
  logs("[api] request ".$method." successful");
  return $data['response'];
}

function logs($line)
{
  print(sprintf("[%s] %s\n", date(DATE_ATOM, time()), $line));
}