[Resolved] Conflict with Additional Variation Images Gallery on PHP 8.2 – Deprecated str_contains() error

Hi,

Thank you for contacting the support.

Before moving forward, can you please try the following?

Take a full backup of your site and database before proceeding. It is highly advised to try these on a dev or staging site first, so your live site isn't compromised.

1) Upgrade MySQL to also minimum required version, see https://wpml.org/home/minimum-requirements/ for details.
2) Update WPML plugins to the latest versions, including WPML and String Translation. The String Translation plugin in use is way older.
3) Deactivate all plugins except WPML and String Translation.
4) Switch to a standard theme like 2024 or 2021.
5) Check for the issue if it still happens.
6) Then start activating plugins one by one while keep checking for the issue. This way you 'll be able to pinpoint a conflict when & where it starts creating the problem.
7) If after activating all plugins you see that it still works fine, then switch to your theme and see if that's causing it.

Please let me know your findings and I'll try my best to help you further on the matter.

Regards.

P.S.: I'll be off over the weekend and 'll be able to attend on Monday.

Thank you for the updates and taking your time to test all these.

May I request you to reproduce the issue in this sandbox? hidden link (one-click login).

This is a fresh sandbox site with WPML plugins. Please configure WPML as needed, then add the required plugins (i.e. Additional Variation Images Gallery for WooCommerce and/or etc), as well as, the theme (if needed). And then create some sample content to reproduce the issue.

This sandbox is using PHP 8.1.2-1ubuntu2.22 and a different environment. So if the issue is reproducible here then it'll be evident that issue persists out of the box, otherwise, we'll have to look into your setup.

Please note down the steps when you reproduce the problem, so I can then check the same in different setups (i.e. local and etc).

Please let me know when you're ready.

Sure, please take your time.

Thank you for the updates.

The deprecation message is related to something which is causing a conflict, however, since it is just a deprecation message, it shouldn't break the site. Can you try disabling debug output for deprecated notices? Or perhaps try once with debugging not throwing any messages on frontend, but only logging instead, like following:

define('WP_DEBUG', true);
define( 'WP_DEBUG_LOG', true );
define( 'WP_DEBUG_DISPLAY', false );

And see if it breaks the site or not? If it still does, then definitely there's something else causing the issue.

And for that matter, I need to take a closer look at your site. So I request temporary access (WP-Admin and FTP), preferably to a test site where the problem has been replicated.

Your next answer will be private, to share this information safely.

Also provide detailed steps to reproduce the issue and links to pages in the admin and on the frontend.

IMPORTANT: Please take a complete backup of the site to avoid data loss. I may need to activate/deactivate plugins also.

See https://wpml.org/purchase/support-policy/privacy-and-security-when-providing-debug-information-for-support/ for details on privacy and security.

P.S.: If you don't see the section for providing access information, do not write in the message box or the information may appear as public.

Thank you for your patience and cooperation.

I deactivated plugins except necessary and updated WPML plugins and WordPress to latest versions and then tried to visit a few products (i.e. hidden link) but can not reproduce the said deprecation error.

I've also installed a debug log manager plugin and can see old logs in hidden link, but there are no new error. The latest error before enabling the log again was at Oct 1, 2025 - 08:44:10.

Can you please recheck and let me know? And if you're able to reproduce the issue, please note down the exact steps so I can retry accordingly.

Thanks for your patience. I'm Kor, and I will be taking over from here. I've checked your link here hidden link and I'm not seeing any products or errors.

Could you replicate the issue here? hidden link