Bug: answerInlineQuery error

[AliMD]

This is my code for test answerInlineQuery:

onInlineQuery = (query) => {
  console.log("===> onInlineQuery: ", stringify(query));

  var
  post = data.posts['test'].messages[0],
  results = [{
    type: "photo",
    id: 1,
    photo_file_id: post.photo.id,
    title: "title1",
    description: "description1",
    caption: "caption1",
    input_message_content: {
      message_text: "message_text1"
    }
  }]
  ;

  console.log("results: " + stringify(results));

  bot.answerInlineQuery({
    inline_query_id: query.id,
    results: results,
    cache_time: 1,
    is_personal: false,
    next_offset: ""
  }, (err, data) => {
    console.log("answerInlineQueryCallback: " + stringify({err: err, query: query}));
  })
  .then((data) => {
    console.log("answerInlineQuerySuccess: " + stringify(data))
  })
  .catch((err) => {
    console.log("answerInlineQueryError: " + stringify({err: err, query: query}));
  })
  ;
}

And this is console error

===> onInlineQuery:  {
  "id": "250780611822216560",
  "from": {
    "id": 58389411,
    "first_name": "Ali",
    "last_name": "Mihandoost",
    "username": "Al1MD"
  },
  "query": "",
  "offset": ""
}
results: [
  {
    "type": "photo",
    "id": 1,
    "photo_file_id": "AgADBAADQagxG3Y-EwLpdVrRB_1FdXWoYzAABII7tf8pCsFbQ1gBAAEC",
    "title": "title1",
    "description": "description1",
    "caption": "caption1",
    "input_message_content": {
      "message_text": "message_text1"
    }
  }
]

[TelegramBot]: Failed to get updates from Telegram servers
_http_outgoing.js:443
    throw new TypeError('first argument must be a string or Buffer');
    ^

TypeError: first argument must be a string or Buffer
    at ClientRequest.OutgoingMessage.write (_http_outgoing.js:443:11)
    at Request.write (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/request/request.js:1385:25)
    at FormData.ondata (stream.js:31:26)
    at emitOne (events.js:90:13)
    at FormData.emit (events.js:182:7)
    at FormData.CombinedStream.write (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/combined-stream/lib/combined_stream.js:118:8)
    at FormData.CombinedStream._pipeNext (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/combined-stream/lib/combined_stream.js:106:8)
    at FormData.CombinedStream._getNext (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/combined-stream/lib/combined_stream.js:79:10)
    at FormData.CombinedStream._pipeNext (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/combined-stream/lib/combined_stream.js:107:8)
    at FormData.CombinedStream._getNext (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/combined-stream/lib/combined_stream.js:79:10)
    at FormData.CombinedStream._pipeNext (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/combined-stream/lib/combined_stream.js:107:8)
    at FormData.<anonymous> (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/combined-stream/lib/combined_stream.js:91:10)
    at FormData.<anonymous> (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/form-data/lib/form_data.js:246:5)
    at FormData.CombinedStream._getNext (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/combined-stream/lib/combined_stream.js:84:3)
    at FormData.CombinedStream._pipeNext (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/combined-stream/lib/combined_stream.js:107:8)
    at FormData.CombinedStream._getNext (/Volumes/Repositories/metrofrq_bot/node_modules/telegram-bot-api/node_modules/combined-stream/lib/combined_stream.js:79:10)

[AliMD]

Full source code

[mast]

@AliMD cant verify it right now, i'm travelling.
Just as an idea, can you try to stringify 'results' before passing it to bot.answerInlineQuery?

[AliMD]

Not worked.
I double check the source, it stringifyed!

[AliMD]

Problem solved finally.
All args must be converted to string.
is_personal is not booealn ist string!
I will make a PR for fix in all api's