NavMenu Elementor plugin not working with Astra theme

What a nightmare, an old WordPress site just stopped working with a Fatal Error and the cause was NavMenu, which references no-longer-existing Elementor schemes, namely:

use Elementor\Scheme_Color;
use Elementor\Scheme_Typography;

After a long talk with ChatGPT we finally ‘fixed’ this by removing all the scheme references in two files:

/modules/menus/widgets/default-navmenu.php
/modules/menus/widgets/navmenu-overlay.php

So for example, this code:

    $this->add_control(
        'nav_bar_bg',
        [
            'label'     => __( 'Navbar Background', 'navmenu-addon-for-elementor' ),
            'type'      => Controls_Manager::COLOR,
            'scheme'    => [
                'type'  => Scheme_Color::get_type(),
                'value' => Scheme_Color::COLOR_1,
            ],
            'default'   => '#00215e',
            'selectors' => [
                '{{WRAPPER}} .elementor-menu' => 'background-color: {{VALUE}};',
            ],
        ]
    );

Becomes:

    $this->add_control(
        'nav_bar_bg',
        [
            'label'     => __( 'Navbar Background', 'navmenu-addon-for-elementor' ),
            'type'      => Controls_Manager::COLOR,
            //'scheme'    => [
            //  'type'  => Scheme_Color::get_type(),
            //  'value' => Scheme_Color::COLOR_1,
            //],
            'default'   => '#00215e',
            'selectors' => [
                '{{WRAPPER}} .elementor-menu' => 'background-color: {{VALUE}};',
            ],
        ]
    );

Note the // on the scheme block. There are quite a lot of occurrences of this in the two files.

Note also some single lines that need the same treatment:

    $this->add_group_control(
        Group_Control_Typography::get_type(),
        [
            'name'     => 'search_typography',
            'label'    => __( 'Typography', 'navmenu-addon-for-elementor' ),
            //'scheme'   => Scheme_Typography::TYPOGRAPHY_1,
            'selector' => '{{WRAPPER}} .overlay-navigation a',
        ]
    );

I’m not saying this is a true fix, but it does at least get things working again.

It looks like NavMenu stopped being updated several years ago.