Update: it looks nicehash problem, my rig also give same error on stratum+tcp://lyra2z.eu.nicehash.com:3365.
OMG, I have no Luck mining lyra2z :-(.
please fix this error so i don't have to keep manually restart my rigs every 15-30 min try a different location
Also if it helps i'm mining CRS and it does NOT switch back to the original Pool
stratum+tcp://lyra2z.LOCATION.nicehash.com:3365
LOCATION: eu, usa, hk, jp, in, br