Hi, how to mine this coin in solo? the pool not working

Stratum connection failed: Failed connect to coinminers.net:3161;

and mine in solo same error

 HTTP request failed: The requested URL returned error: 500 Internal Server Error
 json_rpc_call failed, retry after 30 seconds

many thanks greetings.

conf file is ok and no problem mine other coins.

PD: I understand now 400000 last pow block