Error Get Document's detail

Hi, I get this error when retrieving document detail my url is

GET biprws/raylight/v1/documents/6573

Thanks for your help

<error>

    <error_code>WSR 00999</error_code>

    <message>Internal error</message>

    <stack_trace>com.sap.webi.raylight.RaylightException: Internal error&#13;

    at com.sap.webi.raylight.context.Messenger.internalError(Messenger.java:70)&#13;

    at com.sap.webi.raylight.actions.document.AbstractGetDocumentAction.getDocumentInfo(AbstractGetDocumentAction.java:116)&#13;

    at com.sap.webi.raylight.actions.document.AbstractGetDocumentAction.getDocument(AbstractGetDocumentAction.java:34)&#13;

    at com.sap.webi.raylight.actions.document.GetDocumentByIdAction.execute(GetDocumentByIdAction.java:60)&#13;

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)&#13;

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)&#13;

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)&#13;

    at java.lang.reflect.Method.invoke(Method.java:597)&#13;

    at com.sap.webi.raylight.actions.ActionInvoker.invokeWith(ActionInvoker.java:123)&#13;

    at com.sap.webi.raylight.actions.ActionDispatcher.invoke(ActionDispatcher.java:105)&#13;

    at com.sap.webi.raylight.RaylightServiceDocument.getDocument(RaylightServiceDocument.java:49)&#13;

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)&#13;

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)&#13;

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)&#13;

    at java.lang.reflect.Method.invoke(Method.java:597)&#13;

    at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:173)&#13;

    at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:89)&#13;

    at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:164)&#13;

    at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:242)&#13;

    at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:242)&#13;

    at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:91)&#13;

    at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:58)&#13;

    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)&#13;

    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)&#13;

    at java.util.concurrent.FutureTask.run(FutureTask.java:138)&#13;

    at org.apache.cxf.workqueue.SynchronousExecutor.execute(SynchronousExecutor.java:37)&#13;

    at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:106)&#13;

    at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:255)&#13;

    at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:113)&#13;

    at org.apache.cxf.transport.servlet.ServletDestination.invoke(ServletDestination.java:102)&#13;

    at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:464)&#13;

    at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:149)&#13;

    at com.sap.bip.rs.server.servlet.BIPServletController.invoke(BIPServletController.java:93)&#13;

    at org.apache.cxf.transport.servlet.AbstractCXFServlet.invoke(AbstractCXFServlet.java:148)&#13;

    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:179)&#13;

    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doGet(AbstractHTTPServlet.java:108)&#13;

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)&#13;

    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:159)&#13;

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)&#13;

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)&#13;

    at com.businessobjects.sdk.actionfilter.WorkflowFilter.doFilter(WorkflowFilter.java:45)&#13;

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)&#13;

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)&#13;

    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)&#13;

    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)&#13;

    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)&#13;

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)&#13;

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)&#13;

    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)&#13;

    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)&#13;

    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)&#13;

    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)&#13;

    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)&#13;

    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)&#13;

    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)&#13;

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)&#13;

    at java.lang.Thread.run(Thread.java:761)&#13;

Caused by: java.lang.NullPointerException: while trying to invoke the method com.crystaldecisions.sdk.properties.IProperty.getValue() of a null object loaded from local variable 'property'&#13;

    at com.sap.webi.raylight.util.CmsHelper.getIntValue(CmsHelper.java:298)&#13;

    at com.sap.webi.raylight.util.CmsHelper.getIntValue(CmsHelper.java:182)&#13;

    at com.sap.webi.raylight.actions.document.AbstractGetDocumentAction.getDocumentInfo(AbstractGetDocumentAction.java:79)&#13;

    ... 55 more&#13;

</stack_trace>

</error>