Hello,
We would like to reiterate that your issue is not related to our theme.
You mentioned that you had disabled third-party plugins; however, it appears that this was not the case. The WooCommerce status logs indicate an issue caused by a third-party plugin, as shown in the following report: https://prnt.sc/5jQOUDfdvFiM
To assist you, we have temporarily deactivated the plugin identified in the error message—Germanized —on your website. As a result, the single product page is now displaying content without the critical error.
We kindly recommend that you reach out to the support team of the respective plugin for further assistance in resolving this issue.
Best regards,
8Theme’s Team