Need info Invalid form control with name='jform[discount_expiration_options]

Hi Ruud,
I just been faced with an unpleasant issue: when I edit the product, and trying to save the item, nothing happens.
The console shows the error:

Invalid form control with name='jform[discount_expiration_options][discount_expiration_options0][discount_percentage]' cannot be focused.

Joomla 6.1.0, OchSubscrtiptions 5.3.1, php 8.4.1

The discount tab has standard settings:
 

Thanks in advance.

Hi Dmitrijs,
can you tell me which script and on which line of that script the error is thrown in the console? Should be part of the error in the console

Hi Ruud,
Unfortunately, there is no additional information in the console. The warning message cannot be expanded with details.

 

The translation:
Invalid form control with name='jform[discount_expiration_options][discount_expiration_options0][discount_percentage]' cannot be focused.

btw, I set to PHP 8.3 to check out but it did not help. I set back to PHP 8.4.

What is the skipto script listed in the console?

The second notification:
Source Map Error: Request failed with status 404 Resource URL: https://domain/media/vendor/skipto/js/skipto.min.js?4.1.7 Source Map URL: skipto.min.js.map/*@end

I thought it is something related to core files of Joomla. 
firefox-source-docs.mozilla.org/devtools...utm_campaign=default 

Btw, I see this notification on all pages in the Administrator Panel excluding OCHSubs.
 

[domain]/media/vendor/skipto/js/skipto.min.js?4.1.7

/*! skipto - v4.1.7 - 2023-01-13
* github.com/paypal/skipto
* Copyright (c) 2023 PayPal Accessibility Team and University of Illinois; Licensed */
/*@cc_on @*/
/*@if (@_jscript_version >= 5. @*/

It seems this is something related to accessibility standards.
 

I set CodeMirror instead of TinyMCE and both yellow color notifications disappeared but when save the Product, the same "Invalid form control" error occurs...

You have configured the product to have in discount tab > Expiration Discount(s) = Use Global = yes
can you tell me what you have configured in component global configuration > Discounts / Notifications tab > Expiration Discount(s) = Yes > Discounts?
So what Discounts have you configured there?

The screenshots are enclosed.

Thank you.