我是XCode的新手，我正在学习一个购物清单程序的在线教程。我有这个错误，它出现两次，“类型为‘any’的值没有下标”。如果有人能帮助我或给我指导，我将不胜感激，谢谢！

private func seedItems() {
    let ud = UserDefaults.standard

    if !ud.bool(forKey: "UserDefaultsSeedItems") {
        if let filePath = Bundle.main.path(forResource: "seed", ofType: "plist"), let seedItems = NSArray(contentsOfFile: filePath) {
            // Items
            var items = [Item]()

            // Create List of Items
            for seedItem in seedItems {
                if let name = seedItem["name"] as? String, let price = seedItem["price"] as? Float { //this is where the error appears
                    print("\(name) - \(price)")

                    // Create Item
                    let item = Item(name: name, price: price)

                    // Add Item
                    items.append(item)
                }
            }

            print(items)

            if let itemsPath = pathForItems() {
                // Write to File
                if NSKeyedArchiver.archiveRootObject(items, toFile: itemsPath) {
                    ud.set(true, forKey: "UserDefaultsSeedItems")
                }
            }
        }
    }
}