Z-Wave dev null pointer when scanning

Thanks for your quick response. Really sorry, I took the link from here: Testing Z-Wave binding on openHAB-2, but was actually looking at the wrong thread, right one is here: OH2 Z-Wave refactoring and testing... and SECURITY

openhab> bundle:list | grep ZWave
252 │ Active   │  80 │ 2.4.0.201807192329     │ ZWave Binding

But yes, I am using the dev binding as I need to use a lock (Danalock V3) which actually works nicely now.

The Error with the most recent binding is the same:

...._ct80_00_000, zwave:somfy_zrtsivnode_00_000]' on 'ZWaveDiscoveryService'!
java.lang.NullPointerException: null
        at org.openhab.binding.zwave.discovery.ZWaveDiscoveryService.startScan(ZWaveDiscoveryService.java:74) [252:org.openhab.binding.zwave:2.4.0.201807192329]
        at org.eclipse.smarthome.config.discovery.AbstractDiscoveryService.startScan(AbstractDiscoveryService.java:208) [97:org.eclipse.smarthome.config.discovery:0.10.0.oh230]
...