java.lang.IllegalStateException: PWC3990: getWriter() has already been called for this response
       at org.apache.catalina.connector.Response.getOutputStream(Response.java:676)
       at org.apache.catalina.connector.ResponseFacade.getOutputStream(ResponseFacade.java:205)
       at info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:106)
       at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:62)
       at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
       at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:84)
       at info.magnolia.cms.filters.CosMultipartRequestFilter.doFilter(CosMultipartRequestFilter.java:87)
       at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:70)
       at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
       at info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:61)
       at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:70)
       at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
       at info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:89)
       at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:62)
       at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
       at info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:84)
       at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:70)
       at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
       at info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:84)
       at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:70)
       at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
       at info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:87)
       at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:70)
       at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
       at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:64)
       at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:70)
       at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:96)
       at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:199)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
       at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
       at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
       at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
       at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:332)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:233)
       at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
       at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
       at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
       at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
       at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
       at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
       at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
       at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
       at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
       at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
       at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
       at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
       at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
       at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
       at java.lang.Thread.run(Thread.java:637)