send email codeigniter 3 fwrite(): send of 5 bytes failed with errno=10054

saya coba di xampp buat send mail menggunakan library email bawaan ci sudah coba ganti port, smtp dll msih error "fwrite(): send of 5 bytes failed with errno=10054 An existing connection was forcibly closed by the remote host."

$config = array();
      $config['protocol'] = 'smtp';
      $config['smtp_host'] = 'smtp.gmail.com';
      $config['smtp_user'] = 'xxx@gmail.com';
      $config['smtp_pass'] = 'xxx';
      $config['smtp_port'] = 465;

      $this->email->initialize($config);
      $this->email->set_newline('\r\n');