danielD-143

Problem:
You are experiencing an issue with the Relevanssi search plugin causing a PHP Fatal error due to maximum call stack size being reached, possibly due to infinite recursion. This problem occurs when using PHP8.3.
Solution:
First, ensure you have a full backup of your website. Then, check the following errata page for a potential workaround related to PHP 8.3 and infinite recursion issues: https://wpml.org/errata/php-8-3-x-fatal-error-maximum-call-stack-size-reached-due-to-possible-infinite-recursion/.
If the issue persists, adjust your server's PHP configuration: Set

zend.max_allowed_stack_size

to at least 256 KB and

zend.reserved_stack_size

to at least 48 KB in your php.ini file. After making these changes, restart your web server.

If this solution does not resolve your issue or seems irrelevant due to being outdated or not applicable to your case, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If needed, please open a new support ticket at WPML support forum for further assistance.