Ops, sorry is my fault, I forgot to say this to do the test: set a new username and password in the MQTT tab and "apply changes".
If doesn't work yet remove this file typing in a terminal:
then run OP again and set the username and the password again. Look into /etc/mosquitto/ folder to see if the file is created again.
If doesn't work yet remove this file typing in a terminal:
Code:
sudo rm /etc/mosquitto/passwd.pw
then run OP again and set the username and the password again. Look into /etc/mosquitto/ folder to see if the file is created again.