Drupal 10 compramatible patch

Working patch

You can use official telegram widget to login in site.

<script async src="https://telegram.org/js/telegram-widget.js?21" data-telegram-login="YOU_BOT_NAME_HERE" data-size="medium" data-onauth="onTelegramAuth(user)" data-request-access="write"></script> <script type="text/javascript">function onTelegramAuth(user) { Drupal.ajax({ url: '/user/login/telegram/callback', submit: { 'telegram_data': user } }).execute(); }</script>

Automatically closed - issue fixed for 2 weeks with no activity.