Add error handling to checkout page database queries

src/app/checkout/page.tsx

@@ -2,7 +2,12 @@ import { getCurrentCustomer } from '@/lib/auth';
 import CheckoutPageClient from './client';
 
 export default async function CheckoutPage() {
-  const customer = await getCurrentCustomer();
+  let customer = null;
+  try {
+    customer = await getCurrentCustomer();
+  } catch (err) {
+    console.error('Error fetching customer for checkout:', err);
+  }
 
   return <CheckoutPageClient isLoggedIn={!!customer} customer={customer} />;
 }