Fatal error: Uncaught Error: Call to undefined method WooCommerce::is_rest_api_request() in /home/fishiny2/public_html/classicclays/wp-content/plugins/woocommerce-services/classes/class-wc-connect-functions.php:51 Stack trace: #0 /home/fishiny2/public_html/classicclays/wp-content/plugins/woocommerce-services/classes/class-wc-connect-functions.php(13): WC_Connect_Functions::is_store_api_call() #1 /home/fishiny2/public_html/classicclays/wp-content/plugins/woocommerce-services/classes/class-wc-connect-taxjar-integration.php(423): WC_Connect_Functions::should_send_cart_api_request() #2 /home/fishiny2/public_html/classicclays/wp-includes/class-wp-hook.php(324): WC_Connect_TaxJar_Integration->maybe_calculate_totals(Object(WC_Cart)) #3 /home/fishiny2/public_html/classicclays/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #4 /home/fishiny2/public_html/classicclays/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #5 /home/fishiny2/public_html/classicclays/wp-content/plugins/woocommerce/includes/class in /home/fishiny2/public_html/classicclays/wp-content/plugins/woocommerce-services/classes/class-wc-connect-functions.php on line 51