我在上蒸汽录像课程。我严格按照它编写代码，当我试图发送一个Post请求（通过 Postman ）时，得到一个自定义错误代码。在这个过程中，一切都很好，似乎代码是相同的。有人知道该怎么做吗？

import Foundation
import Fluent
import Vapor

struct ProductsController: RouteCollection {
    func boot(routes: Vapor.RoutesBuilder) throws {
        let productsGroup = routes.grouped("products")
        productsGroup.post(use: createHandler)
        productsGroup.get(use: getAllHandler)
    }
    
    func createHandler(_ req: Request) async throws -> Product {
        guard let product = try? req.content.decode(Product.self) else {
            throw Abort(.custom(code: 499, reasonPhrase: "Не получилось декодировать контент в модель продукта"))
        }
        
        try await product.save(on: req.db)
        return product
    }
    
    func getAllHandler(_ req: Request) async throws -> [Product] {
        let products = try await Product.query(on: req.db).all()
        return products
    }
}

字符串
swift文件中有一个连接。

import Fluent
import Vapor

func routes(_ app: Application) throws {
    
    try app.register(collection: ProductsController())
    
}

型
这里是code from the video course