Fatal php errors

I am staring to see new errors appear in my error log that appear to be coming from from the order splitter plug-in. I don’t usually spit orders, but I did upon a request of a customer. The split failed when I tried, It basically copied the order into a new order but didn’t provide any options to split products. I manually removed and added products to the respective orders, I’m not sure how I’m gonna handle that accounting wise, because it still has the same total values for both orders… not a big deal, really.. just annoying.

Since I split that order, Ive been getting fatal PHP errors in the log which report Uncaught Error: Call to a member function is_empty() on null in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php: 7481

I’ve disabled the plug-in for now, as I cant recreate the error and see how it is effecting user experience.

Any help would be appreciated.

Log Output:
==========================
[08-Dec-2023 01:20:12 UTC] PHP Fatal error: Uncaught Error: Call to a member function is_empty() on null in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php:7481
Stack trace: 0 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wc_os_front_scripts() 1 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 2 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 3 /var/www/wordpress/wp-includes/script-loader.php(2262): do_action() 4 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts() 5 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 6 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 7 /var/www/wordpress/wp-includes/general-template.php(3052): do_action() 8 /var/www/wordpress/wp-content/themes/material-design-google/header.php(38): wp_head() 9 /var/www/wordpress/wp-includes/template.php(790): require_once(‘/var/www/wordpr…’) 10 /var/www/wordpress/wp-includes/template.php(725): load_template() 11 /v in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php on line 7481
[08-Dec-2023 01:20:12 UTC] PHP Fatal error: Uncaught Error: Call to a member function is_empty() on null in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php:7481
Stack trace: 0 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wc_os_front_scripts() 1 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 2 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 3 /var/www/wordpress/wp-includes/script-loader.php(2262): do_action() 4 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts() 5 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 6 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 7 /var/www/wordpress/wp-includes/general-template.php(3052): do_action() 8 /var/www/wordpress/wp-content/themes/material-design-google/header.php(38): wp_head() 9 /var/www/wordpress/wp-includes/template.php(790): require_once(‘/var/www/wordpr…’) 10 /var/www/wordpress/wp-includes/template.php(725): load_template() 11 /v in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php on line 7481
[08-Dec-2023 01:20:13 UTC] PHP Fatal error: Uncaught Error: Call to a member function is_empty() on null in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php:7481
Stack trace: 0 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wc_os_front_scripts() 1 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 2 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 3 /var/www/wordpress/wp-includes/script-loader.php(2262): do_action() 4 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts() 5 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 6 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 7 /var/www/wordpress/wp-includes/general-template.php(3052): do_action() 8 /var/www/wordpress/wp-content/themes/material-design-google/header.php(38): wp_head() 9 /var/www/wordpress/wp-includes/template.php(790): require_once(‘/var/www/wordpr…’) 10 /var/www/wordpress/wp-includes/template.php(725): load_template() 11 /v in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php on line 7481
[08-Dec-2023 01:20:14 UTC] PHP Fatal error: Uncaught Error: Call to a member function is_empty() on null in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php:7481
Stack trace: 0 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wc_os_front_scripts() 1 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 2 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 3 /var/www/wordpress/wp-includes/script-loader.php(2262): do_action() 4 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts() 5 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 6 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 7 /var/www/wordpress/wp-includes/general-template.php(3052): do_action() 8 /var/www/wordpress/wp-content/themes/material-design-google/header.php(38): wp_head() 9 /var/www/wordpress/wp-includes/template.php(790): require_once(‘/var/www/wordpr…’) 10 /var/www/wordpress/wp-includes/template.php(725): load_template() 11 /v in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php on line 7481
[08-Dec-2023 01:20:15 UTC] PHP Fatal error: Uncaught Error: Call to a member function is_empty() on null in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php:7481
Stack trace: 0 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wc_os_front_scripts() 1 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 2 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 3 /var/www/wordpress/wp-includes/script-loader.php(2262): do_action() 4 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts() 5 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 6 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 7 /var/www/wordpress/wp-includes/general-template.php(3052): do_action() 8 /var/www/wordpress/wp-content/themes/material-design-google/header.php(38): wp_head() 9 /var/www/wordpress/wp-includes/template.php(790): require_once(‘/var/www/wordpr…’) 10 /var/www/wordpress/wp-includes/template.php(725): load_template() 11 /v in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php on line 7481
[08-Dec-2023 01:20:16 UTC] PHP Fatal error: Uncaught Error: Call to a member function is_empty() on null in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php:7481
Stack trace: 0 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wc_os_front_scripts() 1 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 2 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 3 /var/www/wordpress/wp-includes/script-loader.php(2262): do_action() 4 /var/www/wordpress/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts() 5 /var/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 6 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() 7 /var/www/wordpress/wp-includes/general-template.php(3052): do_action() 8 /var/www/wordpress/wp-content/themes/material-design-google/header.php(38): wp_head() 9 /var/www/wordpress/wp-includes/template.php(790): require_once(‘/var/www/wordpr…’) 10 /var/www/wordpress/wp-includes/template.php(725): load_template() 11 /v in /var/www/wordpress/wp-content/plugins/woo-order-splitter/inc/functions.php on line 7481