Steps to reproduce the issue

Joomla 5.3
PHP 8.4
Enable error_reporting to default in configuration.php
Log in administration
Menu System, in group Install click on languages

Expected result

Everything OK

Actual result

Deprecated: Joomla\Http\Http::__construct(): Implicitly marking parameter $transport as nullable is deprecated, the explicit nullable type must be used instead in D:\laragon6-------------\www\j523\libraries\vendor\joomla\http\src\Http.php on line 51

System information (as much as possible)

Additional comments