Un handled exception in Reh Hat 8.0

I am facing an unhandled exception in Reh hat 8.0 having this message
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” An unhandled Exception has occured This is most likely a bug please save the crash dump and file a detailed bug report against reh hat config network at https://bugzilla.redhat.com/bugzilla/ ”

Traceback (most recent call last):
File “/usr/sbin/neat” line 774 in updating devicelist
File “/usr/sbin../share/redhatconfpkg/control.py”line 63, in__in
File “/usr/sbin../share/redhatconfpkg/control.py”line 66, in load
OS Error – Too many open files
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I have configured my server to entertain my LAN clients, but after this exception, all the services offered by server stopped, until I deactivate ppp connection and activate ppp connection again.
Plesase help me to get rid of this problem and advice me a solution.

Thanks in advance.
Saad.