Looking at the CUPS source this is an IPP error. I tried a different connection (dnssd://Samsung%20ML-371x%20Series%20(SEC001599916934)._pdl-datastream._tcp.local/) and it worked perfectly. Looks like the printer doesn't conform to IPP.
Looking at the CUPS source this is an IPP error. I tried a different connection (dnssd: //Samsung% 20ML-371x% 20Series% 20(SEC001599916 934)._pdl- datastream. _tcp.local/ ) and it worked perfectly. Looks like the printer doesn't conform to IPP.