I am trying to send an email to myself but I am getting this error enter image description here

The code that I use is

function notify_password($username, $password) {
// notify the user that their password has been changed

    $conn = db_connect();
    $result = $conn->query("select email from user
                            where username='".$username."'");
    if (!$result) {
      throw new Exception('Could not find email address.');
    } else if ($result->num_rows == 0) {
      throw new Exception('Could not find email address.');
      // username not in db
    } else {
      $row = $result->fetch_object();
      $email = $row->email;
      $from = "From: [email protected] rn";
      $mesg = "Your  password has been changed to ".$password."rn"
              ."Please change it next time you log in.rn";

      if (mail($email, 'login information', $mesg, $from)) {
        return true;
      } else {
        throw new Exception('Could not send email.');
      }
    }
}

I have setup my php.ini file like this phpinifile
and my sendmail file like this sendmailfile