Taxi Ribadesella

<?php
add_filter( ‘rwmb_meta_boxes’, ‘your_prefix_register_meta_boxes’ );

function your_prefix_register_meta_boxes( $meta_boxes ) {
$prefix = ‘prefix-‘;

$meta_boxes[] = [
    'title'      => esc_html__( 'Untitled', 'online-generator' ),
    'id'         => 'untitled',
    'post_types' => ['post'],
    'context'    => 'normal',
    'priority'   => 'high',
];

return $meta_boxes;

}