Use atributes of shortcode in get template half

Hello guys im doing a customized shortcode the place the shopper can set a customized taxonomy and show in my sidebar

I wish to use a template utilizing the get_template_part however i dont get the phrases of the taxonomy

I am utilizing the next code to show the shortcode

perform cat_widgets( $atts ) {
    ob_start();
    get_template_part('templates/show-taxonomy');
    return ob_get_clean();
} 
add_shortcode( 'cat_widgets', 'cat_widgets' );

add_filter( 'widget_text', 'do_shortcode' );

And within the show-taxonomy.php my code is

<?php
    $atts = shortcode_atts( array(
        'custom_taxonomy' => '',
    ), $atts, 'atributes' );
    $terms_categorias = get_terms([
        'taxonomy' => $atts['custom_taxonomy'],
        'hide_empty' => false,
        'orderby' => 'term_id',
        'order' => 'ASC' 
    ]);
    ?>
    
    <ul class="product-categories">
        <?php foreach($terms_categorias as $time period): ?>
            <li class="cat-item">
                <a href="<?php echo esc_url( get_term_link($term) ); ?>">
                    <?php echo esc_html($term->identify); ?>
                </a>
            </li>
        <?php endforeach; ?>
    </ul>
    

I additionally tried to place the atts and get the phrases within the shortcode after de ob_start(); however the returns is identical

Is there one thing that im lacking?