java.lang.ClassCastException: com.google.common.collect.Iterables$8 cannot be cast to java.util.List

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java.lang.ClassCastException: com.google.common.collect.Iterables$8 cannot be cast to java.util.List
at com.atlassian.crowd.directory.RFC2307Directory.searchGroupRelationshipsWithGroupTypeSpecified(RFC2307Directory.java:196)
at com.atlassian.crowd.directory.SpringLDAPConnector.searchGroupRelationships(SpringLDAPConnector.java:1388)
at com.atlassian.crowd.manager.directory.DirectoryManagerGeneric.searchDirectGroupRelationships(DirectoryManagerGeneric.java:889)
at com.atlassian.crowd.manager.directory.DirectoryManagerGeneric.searchNestedGroupRelationships(DirectoryManagerGeneric.java:1069)

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