Fatal error: Uncaught Error: array_column(): Argument #1 ($array)

Hi there!
Im getting a fatal error on the orders part of the site.

Any idea what would be causing this?

See screen shot for Fatal Error

https://prnt.sc/lxmjgwqtTVRc

——–

 Fatal error: Uncaught Error: array_column(): Argument #1 ($array) must be of type array, string given
in /var/web/site/public_html/wp-content/plugins/ast-tracking-per-order-items/includes/class-tpi-orders.php on line 844

Call stack:

1. array_column()
   wp-content/plugins/ast-tracking-per-order-items/includes/class-tpi-orders.php:844
2. TPI_Orders::before_order_itemmeta()
   wp-includes/class-wp-hook.php:308
3. WP_Hook::apply_filters()
   wp-includes/class-wp-hook.php:332
4. WP_Hook::do_action()
   wp-includes/plugin.php:517
5. do_action()
   wp-content/plugins/woocommerce/includes/admin/meta-boxes/views/html-order-item.php:43
6. include()
   wp-content/plugins/woocommerce/includes/admin/meta-boxes/views/html-order-items.php:73
7. include()
   wp-content/plugins/woocommerce/includes/admin/meta-boxes/class-wc-meta-box-order-items.php:40
8. WC_Meta_Box_Order_Items::output()
   wp-admin/includes/template.php:1445
9. do_meta_boxes()
   wp-admin/edit-form-advanced.php:688
10. require()
    wp-admin/post.php:206