Illegal instruction (made a memory dump)
when the connection of the miner falls miningcore

Illegal instruction (made a memory dump)
```
using hiveos miner xmr-stak
[2018-10-25 16:39:02] : Difficulty changed. Now: 25000.                                                                                                                                                            
[2018-10-25 16:39:02] : Pool logged in.                                                                                                                                                                            
[2018-10-25 16:39:05] : SOCKET ERROR - [95.53.247.188:3033] RECEIVE error: socket closed                                                                                                                           
[2018-10-25 16:39:05] : All pools are dead. Idling...
``` 
what could be the problem?                                                                                                                                                             