Hi.
How did you install the Mosquitto broker?
Did you set permissions so that it is able to accept connections from outside the Raspberry Pi?
Regards,
Sara

Thank you.  I didn’t know that you had to install permissions.  I just used these commands

pi@raspberry:~ $ sudo apt update 
pi@raspberry:~ $ sudo apt install -y mosquitto mosquitto-clients
pi@raspberry:~ $ sudo systemctl enable mosquitto.service
pi@raspberry:~ $ hostname -I

What is the command to access permissions

Hi.
Check this tutorial: https://randomnerdtutorials.com/how-to-install-mosquitto-broker-on-raspberry-pi/
Scroll down to the section “Enable Remote Access/ Authentication”. Then, follow one of those two options.
Note that if you enable the option with username and password, then you need to pass the username and password on the code you upload to your board.
I hope this helps.
Regards
Sara

I helps but I am getting a lot of junk.
I don’t get the success message but when I subscribed to hello using the OS console, it says that it is receiving the message.  I will count that as a success.         
Thanks for you help

What junk are you referring to?
Can you be a little more specific?
Regards,
Sara

Sorry about the delay; here is what it says:
MICROPY_PY_BBUILTINS_STR_UNICODE
sz=1
out_sz=MP_STREAM_ERROR
out_sz=0
error=11
error!=0
n_args=2
That’s it. Thanks in advance