Broadlink-MQTT "invalid subscription filter" error message

[emberbrook]

Thankyou for this Broadlink-MQTT facility.

I have 10 BG sockeets and followed the instructions up to running mqtt.py when I get the attached invalid subscription filter error message. I also attach my custom.conf file. I just get a continuous string of 'clients/broadlink Adios!' messages in my MQTT Server. I am running RPi4 with Python 3.9.2

AA) What is wrong with my subscription?

BB) Please clarify how I can control all 10 BG sockets as they each have their own MAC and IP address. I am unclear were and how to enter these details in custom.conf.

CC) It appears that a python script operates in a forever loop to support this. Will this slow down my Node Red automation system?

Error.txt
customconf.txt