[ASK] Spark no longer connect into Openfire Server WSSERV2012R2

Hello all

I have a pretty problem with connection between spark and openfire server always reconnecting problem, I already check a some config into Openfire console but until now are there finding out, Im confused because downtime just only at time 08:00 and just laptop standby for a few minute , I hope are there expert can explain how to resolved, Thanks

Spark Error Login.JPG