NFA service stopped

NFA service stopped

Hi all,
Could u explain to me, why my NFA Server sometime can't works ?
I've tried to scan the server port, and the server is able to accept the udp 9996 (netflow packet), but the web graph can't view the managed devices.
And, after i restarted the ManageEngine Netflow Analyzer 5 Service, the server are back to normal.
I'm using Netflow Version 5.5.0 and Build Number :5502.



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