php - Losing Cookies after succesful login

I try to call a page after succeful login but it's redirect me to log out page

when i run the script everything works fine! i can login and save cookies, reuse cookies and get pages without any problem. but once the script finish and try to run it again and get another page with the same cookies, the website redirect me to logout page.

here is my curl request

$headers = ['User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36','Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3','Accept-Language: en-US,en;q=0.9'];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, $header);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, __DIR__.'/tmp/'.session_id());
curl_setopt($ch, CURLOPT_COOKIEFILE, __DIR__.'/tmp/'.session_id());
if(!is_null($data))
{
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    $headers[] = 'Content-Type: application/x-www-form-urlencoded';
}
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$exec = curl_exec($ch);
$error = curl_error($ch);
curl_close($ch);
return $exec;
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