pspng error when deleting folder

Error: java.lang.IllegalStateException: this should never happen: group has no parent stem: Can't find stem by uuid: '867d68c11ccc4e0197c2ef18914db527',Error: java.lang.IllegalStateException: this should never happen: group has no parent stem: Can't find stem by uuid: '867d68c11ccc4e0197c2ef18914db527',Problem in HibernateSession: HibernateSession (7cc191d8): new, readonly, NONE, notActiveTransaction, session (null) at edu.internet2.middleware.grouper.Group.getParentStem(Group.java:4128) at edu.internet2.middleware.grouper.pspng.PspUtils.getStemAttributes(PspUtils.java:137) at edu.internet2.middleware.grouper.pspng.GrouperGroupInfo.getJexlMap(GrouperGroupInfo.java:134) at edu.internet2.middleware.grouper.pspng.Provisioner.getGroupJexlMap(Provisioner.java:2097) at edu.internet2.middleware.grouper.pspng.Provisioner.populateJexlMap(Provisioner.java:987) at edu.internet2.middleware.grouper.pspng.LdapProvisioner.populateJexlMap(LdapProvisioner.java:396) at edu.internet2.middleware.grouper.pspng.LdapProvisioner.populateJexlMap(LdapProvisioner.java:51) at edu.internet2.middleware.grouper.pspng.Provisioner.evaluateJexlExpression(Provisioner.java:883) at edu.internet2.middleware.grouper.pspng.Provisioner.shouldGroupBeProvisioned(Provisioner.java:2113) at edu.internet2.middleware.grouper.pspng.Provisioner.filterWorkItems2(Provisioner.java:556) at edu.internet2.middleware.grouper.pspng.Provisioner.filterWorkItems(Provisioner.java:613) at edu.internet2.middleware.grouper.pspng.Provisioner.provisionBatchOfItems(Provisioner.java:2168) at edu.internet2.middleware.grouper.pspng.PspChangelogConsumerShim.processChangeLogEntries(PspChangelogConsumerShim.java:117) at edu.internet2.middleware.grouper.changeLog.ChangeLogHelper.processRecords(ChangeLogHelper.java:247) at edu.internet2.middleware.grouper.app.loader.GrouperLoaderType$6.runJob(GrouperLoaderType.java:673) at edu.internet2.middleware.grouper.app.loader.GrouperLoaderJob.runJob(GrouperLoaderJob.java:465) at edu.internet2.middleware.grouper.app.loader.GrouperLoaderJob.execute(GrouperLoaderJob.java:345) at org.quartz.core.JobRunShell.run(JobRunShell.java:202) at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)Caused by: edu.internet2.middleware.grouper.exception.StemNotFoundException: Can't find stem by uuid: '867d68c11ccc4e0197c2ef18914db527',Problem in HibernateSession: HibernateSession (7cc191d8): new, readonly, NONE, notActiveTransaction, session (null) at edu.internet2.middleware.grouper.internal.dao.hib3.Hib3StemDAO.findByUuid(Hib3StemDAO.java:2241) at edu.internet2.middleware.grouper.internal.dao.hib3.Hib3StemDAO.findByUuid(Hib3StemDAO.java:1088) at edu.internet2.middleware.grouper.Group$11.callback(Group.java:4113) at edu.internet2.middleware.grouper.internal.dao.hib3.Hib3TransactionDAO$1.callback(Hib3TransactionDAO.java:66) at edu.internet2.middleware.grouper.hibernate.HibernateSession.callbackHibernateSession(HibernateSession.java:703) at edu.internet2.middleware.grouper.internal.dao.hib3.Hib3TransactionDAO.transactionCallback(Hib3TransactionDAO.java:56) at edu.internet2.middleware.grouper.hibernate.GrouperTransaction.callbackGrouperTransaction(GrouperTransaction.java:87) at edu.internet2.middleware.grouper.Group.getParentStem(Group.java:4109) ... 18 moreDid not get all the way through the batch! -1 != 105602365java.lang.RuntimeException: Error in loader job: null, check logs: Error: java.lang.IllegalStateException: this should never happen: group has no parent stem: Can't find stem by uuid: '867d68c11ccc4e0197c2ef18914db527',Problem in HibernateSession: HibernateSession (7cc191d8): new, readonly, NONE, notActiveTransaction, session (null) at edu.internet2.middleware.grouper.Group.getParentStem(Group.java:4128) at edu.internet2.middleware.grouper.pspng.PspUtils.getStemAttributes(PspUtils.java:137) at edu.internet2.middleware.grouper.pspng.GrouperGroupInfo.getJexlMap(GrouperGroupInfo.java:134) at edu.internet2.middleware.grouper.pspng.Provisioner.getGroupJexlMap(Provisioner.java:2097) at edu.internet2.middleware.grouper.pspng.Provisioner.populateJexlMap(Provisioner.