Can’t add variable products to cart after selecting options

I have the same issue after I have updated to WooCommerce 8.5.1. Did you do the update as well? But I also have the issue with Storefront theme, so I don’t think it’s related to Woodmart.

Hi ahmedmohiddinmd and jackennils,

Thanks for reaching to us.

I tested your site on my local, I could added variable products to cart, please see recorded video https://screenpal.com/watch/cZVbQhVJDcE

Please clear browser cache and check again.

Regards,

Let me give you a quick update about my findings:

– Not being able to select variations is definitely tied to WP-Optimize in my case. (Screencast: https://lumiqy.de/WC8.5.1_issue_20240117.mp4)
– Items not being added to the cart after selecting a variation is caused my OMGF plugin in my case. (Screencast: https://lumiqy.de/OMGF_WC8.5.1_issue_20240117.mp4)

2 related issue but different causes. Both issues occur with Storefront as well, so I guess it is not related to Woodmart.

At least in my case. I’m now in contact with support of WooCommerce, WP-Optimize and OMGF. It seems WC 8.5.1 brought some changes which were probably not intended…

• This reply was modified 10 months, 4 weeks ago by jackennils.

Thanks Hung!

I get this error in my debug log:

[19-Jan-2024 16:10:30 UTC] PHP Warning: Cannot modify header information – headers already sent by (output started at /www/htdocs/w01a4bb6/web/staging-lumiqy2/wp-content/plugins/wp-optimize/minify/class-wp-optimize-minify.php:131) in /www/htdocs/w01a4bb6/web/staging-lumiqy2/wp-content/themes/woodmart/inc/integrations/woocommerce/functions.php on line 2311

Hi Hung,

I figured out it is only a specific feature of WP-Optimize with is having a conflict.

It offers JS and CSS minification. And I can leave both options on, the only thing which is not working is the merging of multiple JS files into one file which is causing the issue of not being able to select a variation.
This came with the update of WC 8.5.1. So maybe there is a incompatibility between Woodmart and WC 8.5.1 which is the root cause for the WP-Optimize issue?

Well, everything is working as long as the merging of JS files is disabled in WP-Optimize. No errors. Just working as intended.

However, I still guess that something has changed with WC 8.5.1 so that combining the JS files of WC and Woodmart leads to this issue. Fortunately, it is a minor problem that hardly affects pagespeed noticeably. But it’s there.