add_filter in functions.php of child theme is suggested on the internet but breaks my site on php 8 specifically. What is the issue here?

In the functions.php of my Child Theme I have the following lines:

//Elementor - disable Google Fonts
 add_filter( 'elementor/frontend/print_google_fonts', '__return_false' );
 add_filter( 'elementor/fonts/additional_fonts', '__return_false' );

I've found this solution on various posts on the Internet.

• https://github.com/elementor/elementor/issues/4624
• https://www.moorewebexposure.com/wordpress-posts/elementor/disable-all-google-fonts-from-loading-in-elementor/

Now the thing is: This works only on php7.

On PHP 8 it breaks my site.

Why is this and what can I do to resolve this?

Thanks in advance.

edit: The error is thrown: /root/wp-content/plugins/elementor-pro/modules/assets-manager/asset-types/fonts-manager.php on line 342 and the according snippet is:

return array_replace( $custom_fonts, $fonts );

in the block:

    public function register_fonts_in_control( $fonts ) {
        $custom_fonts = $this->get_font_types();
        if ( empty( $custom_fonts ) ) {
            $this->generate_fonts_list();
            $custom_fonts = $this->get_font_types();
        }

        return array_replace( $custom_fonts, $fonts );
    }