尝试删除双引号

Try by removing double quote

"vehicleId" as vehicleId

[
    {
        vehicleId: "1",
        status: "Running",
        position: "x",
        battery: "25",
        distanceTravelled: "123",
        destination: "y",
        freeSeats: "2",
        speed: "32"
    }
]