Error 22023

JSO_MAKE_INHERITANCE has found that the object <http://www.openlinksw.com/virtrdf-data-formats#singlepart-literal-fn-nullable> has set virtrdf:noInherit but has no virtrdf:inheritFrom
in
signal:(BIF),
DB.DBA.JSO_MAKE_INHERITANCE([executable]/sparql.sql:10757),
DB.DBA.JSO_MAKE_INHERITANCE([executable]/sparql.sql:10796),
DB.DBA.JSO_LOAD_INSTANCE([executable]/sparql.sql:10880),
DB.DBA.JSO_LOAD_GRAPH_MEMONLY([executable]/sparql.sql:10939),
DB.DBA.JSO_LOAD_GRAPH([executable]/sparql.sql:10992),
DB.DBA.CL_RDF_INF_INIT_SRV:17,
aq_wait_all:(BIF),
DB.DBA.CL_RDF_INF_INIT:2,
<Top Level>,
WS.WS.GET([executable]/dav.sql:2717)