Message: idn_to_ascii(): intl_idna_variant_2003 is deprecated?

Опять ошибка, устаревшая версия, Помогите, пожалуйста, корректно ввести поправки, не пойму где и как. PHP 7.3.7 версия

A PHP Error was encountered
Severity: 8192

Message: idn_to_ascii(): INTL_IDNA_VARIANT_2003 is deprecated

Filename: libraries/Form_validation.php

Line Number: 1246

Backtrace:

File: C:\xampp\htdocs\kinomonster\application\controllers\Auth.php
Line: 140
Function: run

File: C:\xampp\htdocs\kinomonster\index.php
Line: 292
Function: require_once