Fatal error: Uncaught Error: Undefined constant "SOURCE_WC_APP" in /home/rizqfarm/public_html/wp-content/plugins/shiprocket/includes/class-shiprocket-woocommerce-shipping-method.php:370 Stack trace: #0 /home/rizqfarm/public_html/wp-content/plugins/shiprocket/includes/class-shiprocket-woocommerce-shipping-method.php(233): Shiprocket_Woocommerce_Shipping_Method->get_rates_from_server(Array) #1 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/abstracts/abstract-wc-shipping-method.php(257): Shiprocket_Woocommerce_Shipping_Method->calculate_shipping(Array) #2 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/class-wc-shipping.php(348): WC_Shipping_Method->get_rates_for_package(Array) #3 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/class-wc-shipping.php(260): WC_Shipping->calculate_shipping_for_package(Array, 0) #4 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart.php(1445): WC_Shipping->calculate_shipping(Array) #5 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(346): WC_Cart->calculate_shipping() #6 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(857): WC_Cart_Totals->get_shipping_from_cart() #7 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(151): WC_Cart_Totals->calculate_shipping_totals() #8 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(141): WC_Cart_Totals->calculate() #9 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart.php(1414): WC_Cart_Totals->__construct(Object(WC_Cart)) #10 /home/rizqfarm/public_html/wp-includes/class-wp-hook.php(322): WC_Cart->calculate_totals() #11 /home/rizqfarm/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #12 /home/rizqfarm/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #13 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart.php(1292): do_action('woocommerce_add...', 'a613863f6a3ada4...', 4593, 1, 0, Array, Array) #14 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/class-wc-form-handler.php(854): WC_Cart->add_to_cart(4593, 1) #15 /home/rizqfarm/public_html/wp-content/plugins/woocommerce/includes/class-wc-form-handler.php(826): WC_Form_Handler::add_to_cart_handler_simple(4593) #16 /home/rizqfarm/public_html/wp-includes/class-wp-hook.php(324): WC_Form_Handler::add_to_cart_action('') #17 /home/rizqfarm/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #18 /home/rizqfarm/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #19 /home/rizqfarm/public_html/wp-settings.php(726): do_action('wp_loaded') #20 /home/rizqfarm/public_html/wp-config.php(105): require_once('/home/rizqfarm/...') #21 /home/rizqfarm/public_html/wp-load.php(50): require_once('/home/rizqfarm/...') #22 /home/rizqfarm/public_html/wp-blog-header.php(13): require_once('/home/rizqfarm/...') #23 /home/rizqfarm/public_html/index.php(17): require('/home/rizqfarm/...') #24 {main} thrown in /home/rizqfarm/public_html/wp-content/plugins/shiprocket/includes/class-shiprocket-woocommerce-shipping-method.php on line 370