How to start app with WIFI connection

[JochenKoehler69]

Could you please give an example how to execute the app when connectin via Wifi (with an IP address).
I tried it this way:

/usr/local/bin/bwa_mqtt_bridge mqtt://localhost 192.168.178.199

but got an error message:

Traceback (most recent call last):
        7: from /usr/local/bin/bwa_mqtt_bridge:23:in `<main>'
        6: from /usr/local/bin/bwa_mqtt_bridge:23:in `load'
        5: from /var/lib/gems/2.5.0/gems/balboa_worldwide_app-1.2.4/bin/bwa_mqtt_bridge:278:in `<top (required)>'
        4: from /var/lib/gems/2.5.0/gems/balboa_worldwide_app-1.2.4/bin/bwa_mqtt_bridge:278:in `new'
        3: from /var/lib/gems/2.5.0/gems/balboa_worldwide_app-1.2.4/lib/bwa/client.rb:18:in `initialize'
        2: from /var/lib/gems/2.5.0/gems/balboa_worldwide_app-1.2.4/lib/bwa/client.rb:18:in `new'
        1: from /var/lib/gems/2.5.0/gems/ccutrer-serialport-1.0.0/lib/ccutrer/serial_port.rb:7:in `initialize'
/var/lib/gems/2.5.0/gems/ccutrer-serialport-1.0.0/lib/ccutrer/serial_port.rb:7:in `initialize': No such file or directory @ rb_sysopen - 192.168.178.20 (Errno::ENOENT)

Thanks!