Next js、MongoDB和Prisma.包括不为相关字段工作

我正在try 通过Prisma查询我的MongoDB数据库.我想在我的查询中加入"财产"一词.Postman正在返回包含房产数据的正确数据，但在NextJs应用程序中，它似乎是未定义的或为空.我的疑问是:

export async function GET(request: NextRequest) {
    const maintenanceItems = await prisma.maintenance.findMany({
        include: {
            property: true,
        }
    })
    return NextResponse.json(maintenanceItems)
}

我是这么称呼它的

let maintenanceItems: NewMaintenanceIncidentType[] = [];
export const getMaintenanceItems = async () => {
    try {
        const response = await fetch(`${process.env.BASE_URL}/api/maintenance/`, {
            method: "GET",
            headers: {
                "Content-Type": "application/json",
            },
        });
        if (!response.ok) {
            throw new Error("Failed to fetch Maintenance Items");
        }

        maintenanceItems = await response.json();
        console.log("from the server: ", maintenanceItems);

    } catch (error) {
        console.log("Server fetch failed on OpenMaintenanceItemPage ", error);
    }
    return maintenanceItems
};

我的模特是:

model Maintenance {
  id          String   @id @default(auto()) @map("_id") @db.ObjectId
  name        String
  description String 
  status      String
  image       String?
  createdDate DateTime @default(now())
  dueDate     DateTime
  property    Property @relation(fields: [propertyId], references: [id])
  propertyId  String   @db.ObjectId
}

model Property {
  id               String         @id @default(auto()) @map("_id") @db.ObjectId
  propertyType     String 
  streetNumber     String 
  street           String
  postcode         String
  apartmentNumber  String? 
  city             String
  county           String
  propertyCategory String 
  status           String
  maintenanceTasks Maintenance[]
  userProperties   UserProperty[]

}

以下是我喜欢的类型

export type NewMaintenanceIncidentType = {
    id: string,
    name: string,
    description: string,
    status: string,
    image: string,
    createdDate: Date,
    dueDate: Date,
    property: PropertyType,
    reportedBy: string,
    assignedTo: string,
    propertyId: string,
}

export type PropertyType = {
    id: string;
    propertyType: string;
    streetNumber: string;
    street: string;
    postcode: string;
    apartmentNumber: string;
    city: string;
    county: string;
    propertyCategory: string;
    status: string;
}

这就是我通过服务器页面获取数据的方式

export default async function OpenMaintenanceItemsPage() {
  const openMaintenanceItems = await getMaintenanceItems();

  return (
    <>
      <Typography>Open Maintenance Items Page</Typography>
      <BasicTable openMaintenanceItems={openMaintenanceItems} />
    </>
  );
}

如果您需要任何其他信息，请让我知道.我已经被困在这个问题上好几个小时了

谢谢