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Overview of the issue
When viewing orders associated with WooCommerce Subscriptions while WPML is active, users may encounter a fatal PHP error:
PHP Fatal error: Uncaught TypeError: Illegal offset type in isset or empty in .../wp-content/plugins/sitepress-multilingual-cms/classes/core-abstract-classes/class-wpml-element-translation.php:259
Workaround
Please, make sure of having a full backup of your site before proceeding.
- Open …/wp-content/plugins/woocommerce-subscriptions/vendor/woocommerce/subscriptions-core/includes/wcs-helper-functions.php file.
- Change from:
function wcs_get_edit_post_link( $post_id ) { $object = wc_get_order( $post_id ); // works for both WC Order and WC Subscription objects. if ( ! $object || ! in_array( $object->get_type(), array( 'shop_order', 'shop_subscription' ), true ) ) { return; } return apply_filters( 'get_edit_post_link', $object->get_edit_order_url(), $post_id, '' ); }
- To:
function wcs_get_edit_post_link( $post_id ) { if ($post_id instanceof('WC_Subscription')){ $post_id = $post_id->id; } $object = wc_get_order( $post_id ); // works for both WC Order and WC Subscription objects. if ( ! $object || ! in_array( $object->get_type(), array( 'shop_order', 'shop_subscription' ), true ) ) { return; } return apply_filters( 'get_edit_post_link', $object->get_edit_order_url(), $post_id, '' ); }