Custom query with taxonomy in a gutenberg block.

Hello, In my case I want to make a custom query using taxonomies. I have a CPT of books and a CPT of topics. I want to have a gutenberg block template, where I can relate these custom post type. Example: In CPT Topics, have a post called: Drawing Books, and in CPT Books, have all the books related to that topic. In the post of Drawing Books, to insert blocks to separate the books by sub-topics, and as a result to have a block that consults the "Basic Drawing Books" and the block that follows consults "Animated Drawing Books".

I have been trying to do it this way:

add_filter( 'rwmb_meta_boxes', function( $meta_boxes ) {
    $meta_boxes[] = [
        'title' => 'Books',
        'id'    => 'book',
        'type'  => 'block', // Important.
        'icon'  => '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 576 512"><path fill="currentColor" d="M485.5 0L576 160H474.9L405.7 0h79.8zm-128 0l69.2 160H149.3L218.5 0h139zm-267 0h79.8l-69.2 160H0L90.5 0zM0 192h100.7l123 251.7c1.5 3.1-2.7 5.9-5 3.3L0 192zm148.2 0h279.6l-137 318.2c-1 2.4-4.5 2.4-5.5 0L148.2 192zm204.1 251.7l123-251.7H576L357.3 446.9c-2.3 2.7-6.5-.1-5-3.2z"></path></svg>',
        'category' => 'layout',
        'supports' => [
            'align' => ['wide', 'full'],
        ],
        'render_template' => get_stylesheet_directory() . '/blocks/book/template.php', // The PHP template that renders the block.
        'enqueue_style'   => get_stylesheet_directory_uri() . '/blocks/book/style.css', // CSS file for the block.

        'fields' => [
            [
                'type' => 'text',
                'id'   => 'title',
                'name' => 'Title',
            ],
            [
                'type' => 'textarea',
                'id'   => 'content',
                'name' => 'Content',
            ],
            [
                'type' => 'color',
                'id'   => 'background_color',
                'name' => 'Background Color',
            ],

            array(
                'name'       => 'Taxonomy',
                'id'         => 'taxonomy_books',
                'type'       => 'taxonomy',
                'taxonomy'   => 'book',
                'field_type' => 'select_advanced',
            ),
        ],
    ];
    return $meta_boxes;
} );

This is my template file

<div id="<?= $id ?>" class="<?= $class ?>" style="background-color: <?= mb_get_block_field( 'background_color' ) ?>">

    <div class="books__body">
        <h2><?php mb_the_block_field( 'title' ) ?></h2>

        <div class="books__line"></div>

        <div class="books__content"><?php mb_the_block_field( 'content' ) ?></div>

        <?php  
   $current_post_id = get_the_ID();

$books = $term = rwmb_meta( 'taxonomy_books');
$queryBooks = new WP_query(array(
    'posts_per_page' => -1,
    'post_type' => 'books',
    'tax_query' => array(
        array (
            'taxonomy' => 'book',
            'terms'    => $books,
        ) ),
));

while($queryBooks->have_posts()) {
$queryBooks->the_post(); ?>

<div class="books-query">
    <h5><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h5>
    <p><?php the_excerpt(); ?> <a href="<?php the_permalink(); ?>" class="nu gray">Read Now</a></p>
    </div>
</div>

As you can see my intention is to create a field in the block to select the tag to query.

In this way.

This is the tag that the books must have

This is the block where I want to select the tag to make the query