lauraT-17

Problem:
The client is experiencing a critical error when activating WPML Multilingual CMS, with an 'E_ERROR' on their WordPress site. The error message indicates an undefined function

. The client has attempted to delete and reinstall WPML, restore a working backup, and is considering updating PHP and WordPress with the help of their sysadmins.

Solution:
We recommend checking the PHP version on the server, as the

function is not defined in versions of PHP prior to 8.0. The client is also advised to update their WordPress installation to the latest version, as they are currently using an outdated version (5.7.10), and the latest version is 6.4.2, which can be downloaded from https://wordpress.org/download/. Updating both PHP and WordPress should resolve the issue.

If this solution does not seem relevant or if further assistance is needed, please do not hesitate to open a new support ticket with us here.