User 217 error

[StKi1da]

Trying to get the MQTT up for the hot tub now spring is here! set up the raspberry pi and custom lead as per instructions.

I've set up the broker on the HA (core-mosquitto) and specified the user name and pass in the broker with the default port 1883 and started listening.

I'm modifying the bwa_mqtt_bridge.service as follows, reload, enable and start but am getting user 217 error.

Any ideas what I am doing wrong?

[Unit]
Description=Balboa Spa MQTT Bridge

[Service]
User=cody
ExecStart=/usr/local/bin/bwa_mqtt_bridge mqtt://username:pass@IP address of HA:1883 /dev/ttyUSB0
Environment="LOG_LEVEL=WARN" "LOG_VERBOSITY=0"
Restart=always
RestartSec=3s
Type=notify
NotifyAccess=main
WatchdogSec=60

[Install]
WantedBy=multi-user.target