Runtime Errors

    java.lang.NullPointerException: while trying to invoke the method com.sap.isa.core.UserSessionData.getAttribute(java.lang.String) of a null object loaded from local variable 'userData'
	at JEE_jsp_ipc_tiles_exportConfiguration_1565768045403._jspService(JEE_jsp_ipc_tiles_exportConfiguration_1565768045403.java:102)
	at com.sap.engine.services.servlets_jsp.lib.jspruntime.JspBase.service(JspBase.java:102)
	at com.sap.engine.services.servlets_jsp.server.Invokable.invoke(Invokable.java:152)
	at com.sap.engine.services.servlets_jsp.server.servlet.JSPServlet.service(JSPServlet.java:428)
	at com.sap.engine.services.servlets_jsp.server.servlet.JSPServlet.service(JSPServlet.java:239)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
	at com.sap.engine.services.servlets_jsp.server.Invokable.invoke(Invokable.java:152)
	at com.sap.engine.services.servlets_jsp.server.Invokable.invoke(Invokable.java:38)
	at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:466)
	at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:210)
	at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:441)
	at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:430)
	at com.sap.engine.services.servlets_jsp.filters.DSRWebContainerFilter.process(DSRWebContainerFilter.java:38)
	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:78)
	at com.sap.engine.services.servlets_jsp.filters.ServletSelector.process(ServletSelector.java:81)
	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:78)
	at com.sap.engine.services.servlets_jsp.filters.ApplicationSelector.process(ApplicationSelector.java:278)
	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:78)
	at com.sap.engine.services.httpserver.filters.WebContainerInvoker.process(WebContainerInvoker.java:81)
	at com.sap.engine.services.httpserver.chain.HostFilter.process(HostFilter.java:9)
	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:78)
	at com.sap.engine.services.httpserver.filters.DefineHostFilter.process(DefineHostFilter.java:27)
	at com.sap.engine.services.httpserver.chain.ServerFilter.process(ServerFilter.java:12)
	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:78)
	at com.sap.engine.services.httpserver.filters.MonitoringFilter.process(MonitoringFilter.java:29)
	at com.sap.engine.services.httpserver.chain.ServerFilter.process(ServerFilter.java:12)
	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:78)
	at com.sap.engine.services.httpserver.filters.SessionSizeFilter.process(SessionSizeFilter.java:26)
	at com.sap.engine.services.httpserver.chain.ServerFilter.process(ServerFilter.java:12)
	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:78)
	at com.sap.engine.services.httpserver.filters.MemoryStatisticFilter.process(MemoryStatisticFilter.java:57)
	at com.sap.engine.services.httpserver.chain.ServerFilter.process(ServerFilter.java:12)
	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:78)
	at com.sap.engine.services.httpserver.filters.DSRHttpFilter.process(DSRHttpFilter.java:43)
	at com.sap.engine.services.httpserver.chain.ServerFilter.process(ServerFilter.java:12)
	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:78)
	at com.sap.engine.services.httpserver.server.Processor.chainedRequest(Processor.java:468)
	at com.sap.engine.services.httpserver.server.Processor$FCAProcessorThread.process(Processor.java:262)
	at com.sap.engine.services.httpserver.server.rcm.RequestProcessorThread.run(RequestProcessorThread.java:56)
	at com.sap.engine.core.thread.execution.Executable.run(Executable.java:122)
	at com.sap.engine.core.thread.execution.Executable.run(Executable.java:101)
	at com.sap.engine.core.thread.execution.CentralExecutor$SingleThread.run(CentralExecutor.java:328)