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java.lang.IllegalStateException: strict servlet API: cannot call getOutputStream() after getWriter() at weblogic.servlet.internal.ServletResponseImpl.getOutputStream(ServletResponseImpl.java:313) at oracle.reports.rwclient.RWWriter.getOutputStream(RWWriter.java:263) at oracle.reports.rwclient.RWReportRunner.sendFile(RWReportRunner.java:368) at oracle.reports.rwclient.RWReportRunner.getMainFile(RWReportRunner.java:171) at oracle.reports.rwclient.ServletCmdMgr.handleCmdGetjob(ServletCmdMgr.java:1426) at oracle.reports.rwclient.CommandManager.handleWebCommand(CommandManager.java:94) at oracle.reports.rwclient.ServletCmdMgr.handleWebCommand(ServletCmdMgr.java:369) at oracle.reports.rwclient.RWClient.handleWebCommand(RWClient.java:1312) at oracle.reports.rwclient.RWClient.processRequest(RWClient.java:1900) at oracle.reports.rwclient.RWClient.doPost(RWClient.java:789) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:286) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:260) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:137) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:350) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:25) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:78) at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:141) at java.security.AccessController.doPrivileged(Native Method) at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315) at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:649) at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:124) at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:232) at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:94) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:78) at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:224) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:78) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3654) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3620) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:326) at weblogic.security.service.SecurityManager.runAsForUserCode(SecurityManager.java:196) at weblogic.servlet.provider.WlsSecurityProvider.runAsForUserCode(WlsSecurityProvider.java:203) at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:71) at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2423) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2280) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2258) at weblogic.servlet.internal.ServletRequestImpl.runInternal(ServletRequestImpl.java:1626) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1586) at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:270) at weblogic.invocation.ComponentInvocationContextManager._runAs(ComponentInvocationContextManager.java:348) at weblogic.invocation.ComponentInvocationContextManager.runAs(ComponentInvocationContextManager.java:333) at weblogic.work.LivePartitionUtility.doRunWorkUnderContext(LivePartitionUtility.java:54) at weblogic.work.PartitionUtility.runWorkUnderContext(PartitionUtility.java:41) at weblogic.work.SelfTuningWorkManagerImpl.runWorkUnderContext(SelfTuningWorkManagerImpl.java:617) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:397) at weblogic.work.ExecuteThread.run(ExecuteThread.java:346)