Hi @mihail-barinov
We are also experiencing the same exact issue, although the filtering plugin we use is ‘YITH WooCommerce Ajax Product Filter‘.
Symptoms are the same. On the search result page, if there is “type_aws=true” in the URL and you try filtering for products, we get 500 internal server error during the ajax request.
Error log:
PHP Fatal error: Uncaught Error: Call to a member function get_attributes() on bool /wp-content/plugins/advanced-woo-search/includes/class-aws-order.php:328
Using Advanced Woo Search version 3.12.
Thanks