deleting categories sometimes throws error "Undefined variable $skip_sale_id"

Hi all,
While cleaning up a new shop (copy of an old shop) by deleting categories, I occasionally ran into a blank page when deleting a category, and on checking logs, noticed the following errors displayed in such cases:

[10-Jul-2025 23:42:37 Asia/Tokyo] Request URI: /<admin>/index.php?cmd=category_product_listing&action=delete_category_confirm&cPath=, IP address: 192.168.x.x, Language id 1
#0 /<path>/includes/functions/functions_categories.php(1189): zen_debug_error_handler()
#1 /<path>/<admin>/category_product_listing.php(174): zen_remove_category()
#2 /<path>/<admin>/index.php(16): require('...')
--> PHP Warning: Undefined variable $skip_sale_id in /<path>/includes/functions/functions_categories.php on line 1189.

[10-Jul-2025 23:42:37 Asia/Tokyo] Request URI: /<admin>/index.php?cmd=category_product_listing&action=delete_category_confirm&cPath=, IP address: 192.168.x.x, Language id 1
#0 /<path>/includes/functions/functions_categories.php(1189): zen_debug_error_handler()
#1 /<path>/<admin>/category_product_listing.php(174): zen_remove_category()
#2 /<path>/<admin>/index.php(16): require('...')
--> PHP Warning: Undefined variable $skip_sale_id in /<path>/includes/functions/functions_categories.php on line 1189.
```Retrying after a while did manage to delete the category in question, so this is not any kind of blocker.

A PHP Warning doesn't normally result in a whitepage. Are there any PHP Fatal errors logged?

Note that the PHP Warning posted was corrected post-zc210 release via this GitHub PR: https://github.com/zencart/zencart/pull/7125

Hello @lat9
Thank you for the notice of the GitHub correction, I will apply that.
No, there was no other log associated with this.