Can't delete certain product

[Shop Suey]

I have a product which dan't be deleted.
The main category is unchangeable set to "0".
The product has an ID (993) but when trying to delete there's no ID shown (and no category ID, too).

I tried to duplicate, move, link, link with the multi link manager.
But at last nothing worked. Is there an approach how to get that fixed?

There's a log for it:

27-Aug-2023 16:52:35 Europe/Berlin] Request URI: /admin/index.php?cmd=category_product_listing&cPath=0&product_type=1&pID=993&action=delete_product&page=1, IP address: 2a02:8108:94c0:27a0:ca0e:8f2c:9a91:cf08, Language id 43
#1 require(/admin/includes/modules/delete_product.php) called at [/admin/category_product_listing.php:1102]
#2 require(/admin/category_product_listing.php) called at [/admin/index.php:18]
--> PHP Warning: Undefined variable $pInfo in /admin/includes/modules/delete_product.php on line 15.

[27-Aug-2023 16:52:35 Europe/Berlin] Request URI: /admin/index.php?cmd=category_product_listing&cPath=0&product_type=1&pID=993&action=delete_product&page=1, IP address: 2a02:8108:94c0:27a0:ca0e:8f2c:9a91:cf08, Language id 43
#1 require(/admin/includes/modules/delete_product.php) called at [/admin/category_product_listing.php:1102]
#2 require(/admin/category_product_listing.php) called at [/admin/index.php:18]
--> PHP Warning: Attempt to read property "products_id" on null in /admin/includes/modules/delete_product.php on line 15.

[27-Aug-2023 16:46:46 Europe/Berlin] Request URI: /admin/index.php?cmd=category_product_listing&action=delete_product_confirm&product_type=1&cPath=0&page=0, IP address: 2a02:8108:94c0:27a0:ca0e:8f2c:9a91:cf08, Language id 43
#1 zen_remove_product() called at [/admin/includes/modules/delete_product_confirm.php:50]
#2 require(/admin/includes/modules/delete_product_confirm.php) called at [/admin/category_product_listing.php:273]
#3 require(/admin/category_product_listing.php) called at [/admin/index.php:18]
--> PHP Warning: Undefined array key "products_image" in /admin/includes/functions/general.php on line 1308.

[torvista]

Check in the products table that the master_categories_id is set to something non-zero.
Check in the products_to_categories table that there is an entry for the same something non-zero, if not, add it manually.

[Shop Suey]

thanks!
works like a charm