Exception - WPML

Problem:
After updating WPML and other plugins, a critical error occurs on some WooCommerce product pages when the WPML String Translation plugin is active. Deactivating the plugin resolves the issue temporarily.
Solution:
To permanently fix the issue, modify the code in two files:
1. Navigate to

/wp-content/plugins/sitepress-multilingual-cms/addons/wpml-page-builders/classes/Integrations/Elementor/DataConvert.php

and replace the unserializeString function with the following code:

private static function unserializeString( $string, $associative ) {<br />    // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_unserialize<br />    $value = is_serialized( $string ) ? unserialize( $string ) : json_decode( $string, $associative );<br />    if ($value === null){<br />        return $string;<br />    }<br />    return $value;<br />}

2. Go to

/wp-content/plugins/sitepress-multilingual-cms/addons/wpml-page-builders/classes/Integrations/Elementor/Hooks/QueryFilter.php

and replace the translateQueryIds function with:

public function translateQueryIds( $value, $object_id, $meta_key, $single ) {<br />    if ( WPML_Elementor_Data_Settings::META_KEY_DATA === $meta_key && $single ) {<br />        $value = get_post_meta( $object_id, WPML_Elementor_Data_Settings::META_KEY_DATA, true );<br />        if ( $value ) {<br />            $value = DataConvert::unserialize( $value, false );<br />            $value = this->recursivelyTranslateQueryIds( $value );<br />            if (is_array($value)) {<br />                $value = DataConvert::serialize($value, false);<br />            }<br />        }<br />    }<br /><br />    return $value;<br />}

After making these changes, save the files. This solution was successfully applied to a staging site, resolving the issue.

Please note that this solution might be outdated or not applicable to your specific case. If the problem persists, we highly recommend checking related known issues, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If needed, do not hesitate to open a new support ticket.