Telegram bot error when sending msg, node-red

This is a flow to send a msg to telegram:
04 PM

[{"id":"90fb27e7.b363c8","type":"chatbot-conversation","z":"845016a6.b38828","name":"","botDevelopment":"d1f7aac3.9c2a98","botProduction":"","chatId":"MYTELEGRAMID","userId":"","transport":"telegram","store":"","x":250,"y":380,"wires":[["2414a9fd.e0d016"]]},{"id":"2414a9fd.e0d016","type":"chatbot-message","z":"845016a6.b38828","name":"txt","message":[{"message":"hi there"}],"answer":false,"silent":false,"x":410,"y":380,"wires":[["de9151f1.5acb7"]]},{"id":"de9151f1.5acb7","type":"chatbot-telegram-send","z":"845016a6.b38828","bot":"d1f7aac3.9c2a98","botProduction":"","track":true,"passThrough":true,"outputs":1,"x":570,"y":380,"wires":[[]]},{"id":"8b5a6a.f1808598","type":"inject","z":"845016a6.b38828","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":100,"y":380,"wires":[["90fb27e7.b363c8"]]},{"id":"d1f7aac3.9c2a98","type":"chatbot-telegram-node","z":"","botname":"BOTNAME","usernames":"MYTELEGRAMID","providerToken":"","polling":"1000","store":"","log":"/data/log/telegram.txt","parseMode":"","debug":false,"webHook":"","connectMode":"polling"}]

MYTELEGRAMID is my own telegram id, BOTNAME is the telegram bot name

When injected, I did get the correct message from telegram app. However I noticed there are errors in the debug window:
53 PM

Also found error in the nodered log:

12 Jan 13:39:38 - [error] [chatbot-conversation:90fb27e7.b363c8]
12 Jan 13:39:38 - [error] [chatbot-message:txt]

I can’t figure out what exactly the issue is. There is no more detail logs, and this flow did send correct message. Is there some setting issue on my flow?

Thanks.