New ZWave-JS Pi install: Cannot connect to host core-zwave-js:3000

I just installed the ZWave-JS supervisor addon (new Raspberry Pi install) and it displays all the previously added devices on my UZB1 correctly but the integration always shows this error: Cannot connect to host core-zwave-js:3000

Is there something I need to change the “host” to in the configuration so that it can connect? Thanks.