Fatal error

After installing and trying to add a new taxonomy there’s an error: Fatal error: Uncaught Error: Class 'MetaBox\Updater\Option' not found in /var/www/u0835731/data/www/siteadress.top/wp-content/plugins/mb-custom-post-type/src/Edit.php:116 Stack trace: #0 /var/www/u0835731/data/www/siteadress.top/wp-content/plugins/mb-custom-post-type/src/Edit.php(24): MBCPT\Edit->is_premium_user() #1 /var/www/u0835731/data/www/siteadress.top/wp-includes/class-wp-hook.php(310): MBCPT\Edit->register_upgrade_meta_box('mb-taxonomy') #2 /var/www/u0835731/data/www/siteadress.top/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #3 /var/www/u0835731/data/www/siteadress.top/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #4 /var/www/u0835731/data/www/siteadress.top/wp-admin/includes/meta-boxes.php(1701): do_action('add_meta_boxes', 'mb-taxonomy', Object(WP_Post)) #5 /var/www/u0835731/data/www/siteadress.top/wp-admin/edit-form-advanced.php(271): register_and_do_post_meta_boxes(Object(WP_Post)) #6 /var/www/u0835731/data/www/siteadress.top/wp-admin/post-new.php(75): require('/var/www/u08357...') #7 {main} thr in /var/www/u0835731/data/www/siteadress.top/wp-content/plugins/mb-custom-post-type/src/Edit.php on line 116 Hi @triptikon , What did you do when you got the error ? Can you give me a video or demo site ? Thank you.