Fatal Error on Searching product or order at backend

Hello,

I am using latest version or woocommerce and woocommerce. I just upgraded Php 7.4 to 8 and since then whenever I search a product or order in backend, it shows the following error,

Fatal error: Uncaught Error: mysqli::real_connect(): Argument #5 ($port) must be of type ?int, string given
in /home/629587.cloudwaysapps.com/wp-includes/class-wpdb.php on line 2349

Call stack:

mysqli::real_connect()
mysqli_query()
wp-includes/class-wpdb.php:2349
wpdb::_do_query()
wp-includes/class-wpdb.php:2263
wpdb::query()
wp-includes/class-wpdb.php:3146
wpdb::get_results()
wp-content/plugins/woocommerce/includes/data-stores/class-wc-product-data-store-cpt.php:1707
WC_Product_Data_Store_CPT::search_products()
wp-content/plugins/woocommerce/includes/class-wc-data-store.php:224
WC_Data_Store::__call()
wp-content/plugins/woocommerce/includes/admin/list-tables/class-wc-admin-list-table-products.php:500
WC_Admin_List_Table_Products::query_filters()
wp-content/plugins/woocommerce/includes/admin/list-tables/abstract-class-wc-admin-list-table.php:118
WC_Admin_List_Table::request_query()
wp-includes/class-wp-hook.php:324
WP_Hook::apply_filters()
wp-includes/plugin.php:205
apply_filters()
wp-includes/class-wp.php:409
WP::parse_request()
wp-includes/class-wp.php:813
WP::main()
wp-includes/functions.php:1336
wp()
wp-admin/includes/post.php:1291
wp_edit_posts_query()
wp-admin/includes/class-wp-posts-list-table.php:165
WP_Posts_List_Table::prepare_items()
wp-admin/edit.php:235