Plugin causing conflict with WooCommerce

Since updating to the latest version of WooCommerce ( version 5.8.0 ) this plugin is causing the site to crash when attempting to access the WooCommerce / My Subscriptions area. Here is the critical error reported:

Fatal error: Uncaught TypeError: Argument 1 passed to WC_Admin_Addons::filter_admin_body_classes() must be of the type string, null given, called in /home/xxx/public_html/wp-includes/class-wp-hook.php on line 303 and defined in /home/xxx/public_html/wp-content/plugins/woocommerce/includes/admin/class-wc-admin-addons.php:807 Stack trace: #0 /home/xxx/public_html/wp-includes/class-wp-hook.php(303): WC_Admin_Addons::filter_admin_body_classes(NULL) #1 /home/xxx/public_html/wp-includes/plugin.php(189): WP_Hook->apply_filters(NULL, Array) #2 /home/xxx/public_html/wp-admin/admin-header.php(226): apply_filters('admin_body_clas...', '') #3 /home/xxx/public_html/wp-admin/admin.php(239): require_once('/home/xxx/p...') #4 {main} thrown in /home/xxx/public_html/wp-content/plugins/woocommerce/includes/admin/class-wc-admin-addons.php on line 807
There has been a critical error on this website. Please check your site admin email inbox for instructions.

We deactivated all plugins and reactivated one at a time and tested each time. This is the one that triggers the crash. We also changed themes and tested as well. We really like the display that this creates for the cart and hope you have a fix for this. It’s actually happening on two sites that we have it installed at.