Update templates/cart.html

templates/cart.html

@@ -617,7 +617,7 @@
                 selectedCoupon = null;  // Treat it as no coupon selected
             }
             // Send the selected coupon to the backend for processing
-            fetch('/checkout', {
+            fetch('/cart/checkout', {
                 method: 'POST',
                 headers: { 'Content-Type': 'application/json' },
                 body: JSON.stringify({ selectedCoupon: selectedCoupon })