Malos_zwave don't work

I’ve followed this instruction

But after I typed malos-zwave, it showed me error like bellow. Anyone know the solution?

MALOS ZWave starting

You can query specific driver info using port 50000.

FLAGS_psk : 123456789012345678901234567890aa
I/O warning : failed to load external entity “ZWave_custom_cmd_classes.xml”
Could not load Command Class definitions
terminate called after throwing an instance of ‘zmq::error_t’
what(): Address already in use

Any one can tell me a solution?