ES and Kibana running but still no living connections

Having trouble getting Elasticsearch to fully start.
Systemctl shows service as active…and the status show its starts but stops after this line:

“OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.”

System also not showing port as active and /var/log/ is giving me:
“Caused by: java.lang.ClassNotFoundException: io.netty.internal.tcnative.SSLPrivateKeyMethod”

Any ideas on where to start. Got through tutorial with http stuff and demo certs with no issue.

Thanks!