Bug: Quando se faz uma nova pergunta à resposta do bot, lança exceção

[marcosbaesse]

Conforme o twitt a seguir: https://twitter.com/marcosbaesse/status/1316506402928709634?s=20

O bot não consegue responder à pergunta realizada.

No console da aplicação é lançado o seguinte erro:

@BOTCovidStatus #CovidNaMinhaCidade Rio de Janeiro
TypeError: Cannot read property 'confirmed' of undefined
    at findCasesByCity (C:\marcosbaesse\github\TwitterBotCovidStatus\bot.js:22:55)   
    at Parser.<anonymous> (C:\marcosbaesse\github\TwitterBotCovidStatus\bot.js:45:22)
    at Parser.emit (events.js:315:20)
    at Parser.receive (C:\marcosbaesse\github\TwitterBotCovidStatus\node_modules\twitter\lib\parser.js:58:16)
    at IncomingMessage.<anonymous> (C:\marcosbaesse\github\TwitterBotCovidStatus\node_modules\twitter\lib\twitter.js:284:14)
    at IncomingMessage.emit (events.js:327:22)
    at addChunk (_stream_readable.js:297:12)
    at readableAddChunk (_stream_readable.js:273:9)
    at IncomingMessage.Readable.push (_stream_readable.js:214:10)
    at HTTPParser.parserOnBody (_http_common.js:129:24) {
  source: {
    created_at: 'Wed Oct 14 22:29:20 +0000 2020',
    id: 1316506402928709600,
    id_str: '1316506402928709634',
    text: '@BOTCovidStatus #CovidNaMinhaCidade Rio de Janeiro',
    display_text_range: [ 16, 50 ],
    source: '<a href="https://mobile.twitter.com" rel="nofollow">Twitter Web App</a>',
    truncated: false,
    in_reply_to_status_id: 1316506302231838700,
    in_reply_to_status_id_str: '1316506302231838725',
    in_reply_to_user_id: 1277303145270595600,
    in_reply_to_user_id_str: '1277303145270595589',
    in_reply_to_screen_name: 'BOTCovidStatus',
    user: {...
    },
    geo: null,
    coordinates: null,
    place: null,
    contributors: null,
    is_quote_status: false,
    quote_count: 0,
    reply_count: 0,
    retweet_count: 0,
    favorite_count: 0,
    entities: {
      hashtags: [Array],
      urls: [],
      user_mentions: [Array],
      symbols: []
    },
    favorited: false,
    retweeted: false,
    filter_level: 'low',
    lang: 'pt',
    timestamp_ms: '1602714560621'
  }
}