3445678 - 500 Internal Server Error while log into AS Java - Listener already registered

Accessing  /nwa following error is thrown :

500   Internal Server Error       SAP NetWeaver Application Server/Java AS 

 The initial exception that caused the request to fail, was:

java.lang.IllegalArgumentException: Listener already registered
    at com.sap.engine.cache.job.TimeoutManagerImpl.registerSynchronous(TimeoutManagerImpl.java:77)
    at com.sap.engine.cache.job.TimeoutManagerImpl.registerSynchronousTimeoutListener(TimeoutManagerImpl.java:65)
    at com.sap.engine.cache.core.impl.CacheRegionImpl.goToActiveEvictionMode(CacheRegionImpl.java:309)
    at com.sap.engine.cache.spi.storage.impl.ModeKeeperImpl.checkOnIncrease(ModeKeeperImpl.java:135)
    at com.sap.engine.cache.spi.storage.impl.HashMapStorage.putNewComplex(HashMapStorage.java:203)

at com.sap.engine.cache.spi.storage.impl.HashMapStorage.put(HashMapStorage.java:297)
  at com.sap.engine.cache.core.impl.CacheGroupImpl._put(CacheGroupImpl.java:160)
  at com.sap.engine.cache.core.impl.CacheGroupImpl.put(CacheGroupImpl.java:114)
  at com.sap.engine.cache.core.impl.CacheGroupImpl.put(CacheGroupImpl.java:122)
  at com.sap.engine.cache.core.impl.CacheGroupImpl.put(CacheGroupImpl.java:82)
  at com.sap.tc.webdynpro.serverimpl.core.url.AbstractURLGenerator.checkURL(AbstractURLGenerator.java:804)
  at com.sap.tc.webdynpro.serverimpl.core.url.AbstractURLGenerator.getApplicationURL(AbstractURLGenerator.java:1538)
  at com.sap.tc.webdynpro.serverimpl.core.url.AbstractURLGenerator.getApplicationURL(AbstractURLGenerator.java:162)
  at com.sap.tc.webdynpro.services.sal.url.core.URLGeneratorInternal.getApplicationURL(URLGeneratorInternal.java:315)
  at com.sap.tc.webdynpro.clientimpl.ajax.AjaxUpdateClientPeer.initialize(AjaxUpdateClientPeer.java:464)
  at com.sap.tc.webdynpro.clientimpl.ajax.AjaxClient.initialize(AjaxClient.java:1208)
  at com.sap.tc.webdynpro.clientimpl.ajax.AjaxClient.sendResponseHead(AjaxClient.java:399)
  at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.<init>(ClientApplication.java:422)
  at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.createApplication(ClientApplication.java:338)
  at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.createApplication(ApplicationSession.java:1088)
  at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.<init>(ApplicationSession.java:239)

Failed to process request. Please contact your system administrator.
While processing the current request, an exception occurred which could not be handled by the application or the framework.

SAP NETWEAVER 7.1+

 Listener already registered.500,internal error,NWA,java.lang.IllegalArgumentException,Listener already registered,force synchronization ,Com.sap.engine.cache.job.TimeoutManagerImpl.registerSynchronousTimeoutListener , KBA , BC-JAS-COR , Enterprise Runtime, Core J2EE Framework , BC-JAS-ADM-ADM , Administration , Problem