exchange_volume reports total volume of 0

[jpsgio]

Submitting an exchange_volume query seems to be returning a "successful" response, but the contents suggest that there was a volume of 0 on the exchange.

For example: https://data.ripple.com/v2/network/exchange_volume?exchange_currency=USD&exchange_issuer=rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B&live=day gives me:

{
  "result": "success",
  "count": 1,
  "rows": [
    {
      "components": [],
      "count": 0,
      "exchange": {
        "currency": "USD",
        "issuer": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
      },
      "total": "0",
      "exchange_rate": "0.16199537",
      "start_time": "2020-03-23T17:24:26Z"
    }
  ]
}

I've used this exact query before and it has returned non-zero volumes. Not sure why this is happening now. I'm guessing there weren't actually 0 trades made in the past day.