Iv been using this code for 1-2 moths and now it stoped working, if someone knows coinapi and can help founding the proble?

Today it started sending this message, idk why. The code is from my apps scripts.

function codigo2() {
  var url = 'https://rest.coinapi.io/v1/exchangerate/BTC/USD';
  var hoja = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Hoja 2');
  var apiKey = ''; 
  var options = {
    headers: {
      "X-CoinAPI-Key": apiKey
    }
  };
  
  var response = UrlFetchApp.fetch(url, options);
  var data = JSON.parse(response.getContentText());
  hoja.appendRow([data.rate]);
}

And the response error:

Exception: Request failed for https://rest.coinapi.io returned code 550. Truncated server response: {
  "error": "You requested specific single item that we donu0027t have at this moment."
} (use muteHttpExceptions option to examine full response)
codigo2 @ A Recolector.gs:11

I try to search for doc but my code level in this type of things is to low, and chat didnt give me that much help.