I have a HiveMq broker and Mosquitto broker installed on the same PC with different port number. And I have a NodeMCu wifi chip subscribed to a topic and connected to the Mosquitto broker.
Everything was working fine. Until I changed the configuration of Mosquitto broker to QOS=1.
Now even after i have changed the QOS back to 0 and retained still False, one particular message still gets sent on that particular topic everytime my NodeMcu Reboots.
I restarted the entire system many times. But every time the NodeMcu module boots up, one particular message is sent on one particular topic.
I don't understand what could be going wrong.