04.02.2016 00:44:31.679 *ERROR* [172.31.92.128 [1454564662128] GET /bin/usergroups HTTP/1.1] org.apache.sling.servlets.resolver.internal.SlingServletResolver Original error class java.lang.IllegalStateException
java.lang.IllegalStateException: This session has been closed
at com.google.common.base.Preconditions.checkState(Preconditions.java:150)
at org.apache.jackrabbit.oak.core.ContentSessionImpl.checkLive(ContentSessionImpl.java:85)
at org.apache.jackrabbit.oak.core.MutableRoot.checkLive(MutableRoot.java:172)
at org.apache.jackrabbit.oak.core.MutableRoot.getTree(MutableRoot.java:216)
at org.apache.jackrabbit.oak.core.MutableRoot.getTree(MutableRoot.java:66)
at org.apache.jackrabbit.oak.security.user.AuthorizableBaseProvider.getByPath(AuthorizableBaseProvider.java:66)
at org.apache.jackrabbit.oak.security.user.UserProvider.getAuthorizableByPath(UserProvider.java:199)
at org.apache.jackrabbit.oak.security.user.UserManagerImpl.getAuthorizableByPath(UserManagerImpl.java:121)
at org.apache.jackrabbit.oak.security.user.AuthorizableIterator$PathToAuthorizable.apply(AuthorizableIterator.java:100)
at org.apache.jackrabbit.oak.security.user.AuthorizableIterator$PathToAuthorizable.apply(AuthorizableIterator.java:86)
at com.google.common.collect.Iterators$8.transform(Iterators.java:794)
at com.google.common.collect.TransformedIterator.next(TransformedIterator.java:48)
at com.google.common.collect.Iterators$7.computeNext(Iterators.java:646)
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at org.apache.jackrabbit.oak.security.user.AuthorizableIterator.hasNext(AuthorizableIterator.java:58)
at org.apache.jackrabbit.commons.iterator.RangeIteratorAdapter.hasNext(RangeIteratorAdapter.java:132)
at com.google.common.collect.TransformedIterator.hasNext(TransformedIterator.java:43)
at com.mam.servlets.UserGroupDetails.settingAccess(UserGroupDetails.java:365)
at com.mam.servlets.UserGroupDetails.doGet(UserGroupDetails.java:239)
at org.apache.sling.api.servlets.SlingSafeMethodsServlet.mayService(SlingSafeMethodsServlet.java:268)
at org.apache.sling.api.servlets.SlingAllMethodsServlet.mayService(SlingAllMethodsServlet.java:139)
at org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:344)
at org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:375)
at org.apache.sling.engine.impl.request.RequestData.service(RequestData.java:533)
at org.apache.sling.engine.impl.filter.SlingComponentFilterChain.render(SlingComponentFilterChai
