Hi,
my Z1 stopped working, I can log in via http (shows offline status) and SSH, but all I get is:

root@dayun:~# miner
 [2019-01-11 20:59:27] Started cgminer 4.11.1                  
 [2019-01-11 20:59:27] All devices disabled, cannot mine!          

Is that hardware malfunction? How to repair it?

Thanks.