How to add new custom page in Timber Wordpress

Wordpress version: 6.4.3 "timber/timber": "2.x-dev" Starter theme: upstatement/timber-starter-theme

I understand you require composer to install timber, no longer require plugin but how to new custom page in timber wordpress?

in page attributes, i cannot see the tempalete dropdown to select the template

Did i miss out something?

I did create contact.php

<?php
/**
 * The main template file
 * This is the most generic template file in a WordPress theme
 * and one of the two required files for a theme (the other being style.css).
 * It is used to display a page when nothing more specific matches a query.
 * E.g., it puts together the home page when no home.php file exists
 *
 * Methods for TimberHelper can be found in the /lib sub-directory
 *
 * @package  WordPress
 * @subpackage  Timber
 * @since   Timber 0.1
 */

$context          = Timber::context();
$context['posts'] = Timber::get_posts();
$context['foo']   = 'bar';
$templates        = array( 'contact.twig' );
Timber::render( $templates, $context );

also the contact.twig

{% extends "base.twig" %}

{% block content %}
    {% include "partial/altHero.twig" %}

    <h1>Contact</h1>

{% endblock %}

I am not sure, what else do i missout? and i cannot install the timber plugin as well, error msg when i try to insstall timber plugin **Plugin could not be activated because it triggered a fatal error. **

Your help is most appreciated Cheers

enter image description here

ok, finally solved it

you need add comment in your custom php page template name and description

without it, it will not display

<?php
/**
 * Template Name: My Custom Page<<<<
 * Description: A Page Template with a darker design.<<<<
 * The main template file
 * This is the most generic template file in a WordPress theme
 * and one of the two required files for a theme (the other being style.css).
 * It is used to display a page when nothing more specific matches a query.
 * E.g., it puts together the home page when no home.php file exists
 *
 * Methods for TimberHelper can be found in the /lib sub-directory
 *
 * @package  WordPress
 * @subpackage  Timber
 * @since   Timber 0.1
 */

$context          = Timber::context();
$context['posts'] = Timber::get_posts();
$context['foo']   = 'bar';
$templates        = array( 'contact.twig' );
Timber::render( $templates, $context );