Error while deleting an organization

[khaoula mansouri, módosítva 8 év-val korábban]

Hi guys,
We are using liferay 6.2 CE GA2, I tried to delete an organization, and since then, when I go to "Users and Organization" the server become unavailable.
This the error I got:

15:49:48,496 WARN [ProxyMessageListener:81] java.lang.NullPointerException
java.lang.NullPointerException
at com.liferay.portal.search.lucene.IndexAccessorImpl.deleteDocuments(IndexAccessorImpl.java:138)
at com.liferay.portal.search.lucene.LuceneHelperImpl.deleteDocuments(LuceneHelperImpl.java:339)
at com.liferay.portal.search.lucene.LuceneHelperUtil.deleteDocuments(LuceneHelperUtil.java:301)
at com.liferay.portal.search.lucene.LuceneIndexWriter.deleteDocument(LuceneIndexWriter.java:76)
at sun.reflect.GeneratedMethodAccessor600.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at com.liferay.portal.kernel.messaging.proxy.ProxyRequest.execute(ProxyRequest.java:85)
at com.liferay.portal.kernel.messaging.proxy.ProxyMessageListener.receive(ProxyMessageListener.java:51)
at com.liferay.portal.kernel.messaging.InvokerMessageListener.receive(InvokerMessageListener.java:72)
at com.liferay.portal.kernel.messaging.ParallelDestination$1.run(ParallelDestination.java:69)
at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask._runTask(ThreadPoolExecutor.java:682)
at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask.run(ThreadPoolExecutor.java:593)
at java.lang.Thread.run(Thread.java:636)

Please can anyone help me.
Thank you in advance.

[Muniraj saravanan, módosítva 8 év-val korábban]

Go to Control Panel->Server Administration and Execute Reindex ---> Please check after this.

Thanks
muniraj