GetPriceBarsAfterDate gets 500 Server Error

[stav 1]

I have a demo account that works fine for everything, for example:

https://ciapi.cityindex.com/tradingapi/market/401153870/barhistory?span=1&PriceBars=3&priceType=MID&interval=DAY

{
  PriceBars: [
    {
      BarDate: "/Date(1649635200000)/",
      Open: 1946.57,
      High: 1969.66,
      Low: 1940.05,
      Close: 1953.71
    },
    {
      BarDate: "/Date(1649721600000)/",
      Open: 1952.97,
      High: 1978.71,
      Low: 1949.75,
      Close: 1966.66
    },
    {
      BarDate: "/Date(1649808000000)/",
      Open: 1966.88,
      High: 1981.59,
      Low: 1962.92,
      Close: 1977.87
    }
  ],
  PartialPriceBar: {
    BarDate: "/Date(1649894400000)/",
    Open: 1977.27,
    High: 1980.4,
    Low: 1960.72,
    Close: 1972.3
  }
}

But this call fails:

https://ciapi.cityindex.com/tradingapi/market/401153870/barhistoryafter?span=1&maxResults=3&priceType=MID&interval=DAY&fromTimestampUTC=1647264903000

{
  ok: false,
  redirected: false,
  status: 500,
  statusText: "Internal Server Error",
  url: "https://ciapi.cityindex.com/tradingapi/market/401153870/barhistoryafter?span=1&maxResults=3&priceTyp..."
}

Why am I getting the error?

[Physicsman 30]

Hello Stav,

We're looking into this for you and will reply once I have results of the investigation.

Kind Regards, PM

[Physicsman 30]

Hi Stav,

The timestamp has to be supplied in seconds, rather than milliseconds. 

I have tried a test call and it works when supplied in seconds. 

Kind Regards, PM

[stav 1]

I'm the worst hacker of all time.  That was it PM, it works.

Thanks for your time and for your heroic support in this forum.

Steven Almeroth
Cleveland