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 :-(.
for now I don't have a solution, I suggest you change back to ccminer until NH will fix their EU stratum , plus I will try to see if the Fee mechanism can be improved so it will force to switch back to main pool even if the dev pool not connecting.

Sry :-(.