The bot couldn't understand your message. Please try some other option.

The following message is shown from whatsapp during load testing of 5000 active chats.
"The bot couldn't understand your message. Please try some other option."

And when we start webchat, the bot doesn't reply rather diverts the chat to agent..

Following errors are shown in bot logs

[2021-04-06T11:13:49.392] [DEBUG] rasabotconnector - [messageArrived] error in calling Rasa API {"conversationId":"2VwE9riuSNfvHpAoFYDGG","messageId":"0a510932-6b6f-43c3-ae0f-903f65473467","type":"BotMessage","from":

{"id":"vh58TrNF-xch1c-54dV3o","name":"undefined","lastName":"","type":"Customer"}

,"bot":

{"id":"bot","name":"EF Bot","type":"Rasa","botResponseType":"simple"}

,"timestamp":"2021-04-06T06:13:49.388Z","input":"1","attachments":[],"intents":[],"entities":[],"output":[],"status":408}
[2021-04-06T11:13:49.407] [ERROR] rasabotconnector - [rasa-call requestRasa] request timeout, messageId = d0dcda43-9d28-4950-a4b4-170050e30e18, Leaving: Error Error: read ECONNRESET
errorEmitted: false,
error: [Function: handleRequestError]
isAxiosError: true,

[2021-04-06T11:13:49.407] [DEBUG] rasabotconnector - [messageArrived] error in calling Rasa API {"conversationId":"c40O73A1hKD9JZmwczUEJ","messageId":"d0dcda43-9d28-4950-a4b4-170050e30e18","type":"BotMessage","from":

{"id":"TmmzJ_s_xWqGUyeYvlfPM","name":"undefined","lastName":"","type":"Customer"}

,"bot":

{"id":"bot","name":"EF Bot","type":"Rasa","botResponseType":"simple"}

,"timestamp":"2021-04-06T06:13:49.400Z","input":"1","attachments":[],"intents":[],"entities":[],"output":[],"status":408}
[2021-04-06T11:13:49.408] [ERROR] rasabotconnector - [rasa-call requestRasa] request timeout, messageId = e373d563-9f30-46ba-a3c3-3c7cb9126141, Leaving: Error Error: socket hang up
at connResetException (internal/errors.js:609:14)
errorEmitted: false,
error: [Function: handleRequestError]
isAxiosError: true,