Receive open(): Error occurred while opening the socket connection, connect to null [0]error, when committing a document via ISRA.

Symptom

Document viewing is working fine.

After looking at ISRA_RPC log:
=================================================ERROR HERE !!!!===========================
<Jan 30, 02007 3:10.49.475 PM> : Servlet.Engine.Transports : 1 : open(): Creating socket connection to [null] at [0] port number.
<Jan 30, 02007 3:10.49.476 PM> : Servlet.Engine.Transports : 1 : open(): Error occurred while opening the socket connection, connect to null [0] failed.: The socket name is not available on this system.
<Jan 30, 02007 3:10.49.483 PM> : Servlet.Engine.Transports : 1 : closeConnection(): Entered into the method.
<Jan 30, 02007 3:10.49.483 PM> : Servlet.Engine.Transports : 1 : close(): Closing socket connection from port: [62,026].
<Jan 30, 02007 3:10.49.483 PM> : Servlet.Engine.Transports : 1 : closeConnection(): Exiting from the method.
<Jan 30, 02007 3:10.49.483 PM> : Servlet.Engine.Transports : 1 : FN_IS_RPC_ServiceConnectionManager releaseDOC(): Entered into the method.
<Jan 30, 02007 3:10.49.483 PM> : Servlet.Engine.Transports : 1 : SEC Session Handle : 314008
<Jan 30, 02007 3:10.49.484 PM> : Servlet.Engine.Transports : 1 : DOC Session Handle : 16653672
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Right before the error happens:
===========================
<Jan 30, 02007 3:10.49.469 PM> : Servlet.Engine.Transports : 1 : CSM Pool Name : page_cache1:FINITIDR Ñ ðqt:FileNet ðq¿ d
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