receiving lines like this in the php error log:
Fatal error: Uncaught exception 'BadMethodCallException' with message 'Call to a member function get_formatted_name() on a non-object (boolean)' in /var/www/example.com/htdocs/wp-content/plugins/woocommerce/includes/admin/meta-boxes/class-wc-meta-box-product-data.php:484\nStack trace:\n#0 /var/www/example.com/htdocs/wp-admin/includes/template.php(1044): WC_Meta_Box_Product_Data::output()\n#1 /var/www/example.com/htdocs/wp-admin/edit-form-advanced.php(600): do_meta_boxes()\n#2 /var/www/example.com/htdocs/wp-admin/post.php(209): include()\n#3 {main}
The error resulted in a WSOD when trying to edit some products.