Bulk Actions and 500 Errors

Within the order screen of WooCommerce, we’d like to select and change multiple records to a custom order status. When selecting one from the ‘bulk actions’ dropdown and hitting apply, we are redirected to a page which reports an HTTP ERROR 500. We are running a dev environment where this is successful, with WordPress 4.8.2 and 4.9.1. Both environments are currently using WP 4.9.1, with Custom Order Status 1.3.1 and WooCommerce 3.1.2.

The URL of a successful bulk change looks like this:

“?post_type=shop_order&paged=1&wpamhid=[number]&marked_gaylord-shelf=1&changed=1&marked_preorder=1&ids=[number]”

The unsuccessful page’s looks like this:

“?orderby=date&order=desc&s=&post_status=all&post_type=shop_order&_wpnonce=3643fec2a8&_wp_http_referer=%2Fwp-admin%2Fedit.php%3Fpost_type%3Dshop_order%26orderby%3Ddate%26order%3Ddesc%26paged%3D1%26wpamhid%3Dd711260b7e&action=mark_gaylord-shelf&m=0&_customer_billing_country=&_customer_shipping_country=&_customer_payment_method=&_customer_user=&_shop_order_csv_export_status=&paged=1&post%5B%5D=8231&action2=-1”