Resolved
Reported for: WooCommerce Multilingual & Multicurrency 4.0.4
Resolved in: WooCommerce Multilingual 4.1.0
Overview of the issue
If you are using an older version of WPML – for example 3.4.0, and you update from WooCommerce Multilingual 4.0.3 to 4.0.4 you might get a fatal error similar to the following:
"PHP Fatal error: Call to undefined method WPML_WP_API::is_comments_post_page() in /wp-content/plugins/woocommerce-multilingual/inc/wcml-switch-lang-request.php on line 136"
Workaround
There are two ways to fix this problem:
1. Update WPML to the latest version – this is the recommended, fastest and safest way.
2. Use the following code to patch and replace the get_requested_lang() function in the /woocommerce-multilingual/inc/wcml-switch-lang-request.php file.
public function get_requested_lang() { return $this->is_comments_post_page() ? $this->get_cookie_lang() : $this->get_request_uri_lang(); } public function is_comments_post_page() { global $pagenow; return 'wp-comments-post.php' === $pagenow; }