Add images to radio facets

functions.php

<?php

add_filter( 'facetwp_facet_html', function( $output, $params ) {
    if ( 'my_facet' == $params['facet']['name'] ) {
        $output = '';
        $values = (array) $params['values'];
        $selected_values = (array) $params['selected_values'];
        foreach ( $values as $result ){
            $clean_val = esc_attr( $result );
            $selected = in_array( $result['facet_value'], $selected_values ) ? ' checked' : '';
            $selected .= ( 0 == $result['counter'] && '' == $selected ) ? ' disabled' : '';
            $output .= '<div class="facetwp-radio' . $selected . '" data-value="' . esc_attr( $result['facet_value'] ) . '">';
            $output .= '<img src="url_to_image/' . $clean_val . '.svg" alt="' . $clean_val . '"> ' . $result['counter'];
            $output .= '</div>';
        }
    }
    return $output;
}, 10, 2 );