Getting this error when updating MB:
[02-Jun-2021 06:55:56 UTC] PHP Fatal error: Uncaught Error: Class 'MetaBox\Columns\Processor' not found in /var/www/site.com/htdocs/wp-content/plugins/meta-box-aio/vendor/meta-box/meta-box-columns/meta-box-columns.php:30
Stack trace:
#0 /var/www/site.com/htdocs/wp-includes/class-wp-hook.php(292): mb_columns_add_markup()
#1 /var/www/site.com/htdocs/wp-includes/plugin.php(212): WP_Hook->apply_filters()
#2 /var/www/site.com/htdocs/wp-content/plugins/meta-box/inc/meta-box.php(69): apply_filters()
#3 /var/www/site.com/htdocs/wp-content/plugins/meta-box/inc/meta-box-registry.php(29): RW_Meta_Box->__construct()
#4 /var/www/site.com/htdocs/wp-content/plugins/meta-box/inc/core.php(53): RWMB_Meta_Box_Registry->make()
#5 /var/www/site.com/htdocs/wp-includes/class-wp-hook.php(292): RWMB_Core->register_meta_boxes()
#6 /var/www/site.com/htdocs/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters()
#7 /var/www/site.com/htdocs/wp-includes/plugin.php(484): WP_Hook->do_action()
#8 /var/www/site.com/htdocs/wp-settings.php(560 in /var/www/site.com/htdocs/wp-content/plugins/meta-box-aio/vendor/meta-box/meta-box-columns/meta-box-columns.php on line 30
.
