Stuck at receiving all tokens if some pair does not exist

[alxpsr]

1. Trying to get data from websocket with a 100 ticker pairs
2. If some pair does not exist i'll get an error message like this and can't continue receive data for other existed pairs: {"ts":1695230452246,"event":"error","id":1,"code":201030,"message":"pair is not exists, pair: \"XXX_YYY\""}

How to continue get data despite some pairs does not exist?

const CryptoJS = require('crypto-js');
const { createWSConnection } = require('./WebSocketsPolyfill');
const EXMO_WS_BASE_URL = `wss://ws-api.exmo.com:443/v1`;
const EXMO_WS_PUBLIC_URL = `${EXMO_WS_BASE_URL}/public`;
const EXMO_WS_PRIVATE_URL = `${EXMO_WS_BASE_URL}/private`;

function createExmoWSConnection(url, messages) {
  const socket = createWSConnection(url);
  const onMessage = (event) => console.log('message:', event);
  const onClose = (event) => console.log('connection closed:', event);
  const onError = (error) => console.log('connection error:', error);
  const onInitialize = () => {
    console.log('connection opened');

    for (let message of messages) {
      console.log('sending:', message);
      socket.send(message);
    }
  };

  socket.on('open', onInitialize);
  socket.on("message", onMessage);
  socket.on('close', onClose);
  socket.on('error', onError);
}

function connectExmoWSPublicApi() {
  const data = [
    '{"id":1,"method":"subscribe","topics":["spot/trades:BTC_USD","spot/ticker:LTC_USD", "spot/ticker:XXX_YYY"]}',
  ];

  createExmoWSConnection(EXMO_WS_PUBLIC_URL, data);
}