RocketChat - Apps.Dialogflow

On my server I have the DialogFlow APP installed, you have already entered the data you request and it tells me that “------------------ Google Credentials validation Success ------ ---------- “. Now create the user, and add the bot and Livechat-Agent roles. Assign the new conversations to the bot in OmniChannel and activate LiveChat. When sending a direct message to the bot it does not respond to me and in the logs it indicates [”‘executePostMessageSent’ was called correctly! The result is:”, null]. I need help to complete this detail