How to use the common-errors.Http502Error function in common-errors

async symbol(symbol) {
    l.info(`TickerService - symbols() / Fetching request for current symbol: ${symbol}`)
    try {
      const res = await axios(CRYPTOCOMPARE_API)
      return this.toTickerJson(symbol, res.data)
    } catch (err) {
      l.error(`TickerService - symbols() / Error fetching request for current symbol: ${symbol} | ${err}`)
      throw errors.Http502Error({
        message: "Can't retrieve ticker list from original server. Please, try again later."
      })
    }
  }