fix: throw new error in fetchInvoiceById catch block (#423)

Co-authored-by: Delba de Oliveira <32464864+delbaoliveira@users.noreply.github.com>

dashboard/starter-example/app/lib/data.ts

@@ -165,6 +165,7 @@ export async function fetchInvoiceById(id: string) {
     return invoice[0];
   } catch (error) {
     console.error('Database Error:', error);
+    throw new Error('Failed to fetch invoice.');
   }
 }