Serial data to MQTT

[mactoolz]

Hello,

I am trying to send and receive my serial data via MQTT.
Is this not possible or what could be the reason for not receiving serial data?
The status is transmitted and updated again and again, but it does not work with the serial data.

What am I doing wrong?

Greetings

[uzi18]

How do you want to do it?
Direct pass through serial to mqtt is not supported.
But you can try do it with additional mcu via esp-link library