Need help with transforming raspberry pi to mqqt broker

so i am following this video - https://www.youtube.com/watch?v=_DO2wHI6JWQ&t=465s but as per the video at time 10:10 the guy check if the influx db is getting any data but in my case nothing is showing up ?

If you don't see any data in the influx db then it hasn't received any data and something has gone wrong in the previous steps

So start by checking the logs and verify that node-red sends data to influx