java.lang.IllegalArgumentException: Class number must be bigger than 0.
at de.ids_mannheim.korap.query.wrap.SpanReferenceQueryWrapper.(Spa
nReferenceQueryWrapper.java:29) ~[Kustvakt-full-0.62.3.jar:?]
at de.ids_mannheim.korap.KrillQuery._operationReferenceFromJSON(KrillQue
ry.java:507) ~[Kustvakt-full-0.62.3.jar:?]
at de.ids_mannheim.korap.KrillQuery._groupFromJson(KrillQuery.java:416)
~[Kustvakt-full-0.62.3.jar:?]
at de.ids_mannheim.korap.KrillQuery._fromKoral(KrillQuery.java:238) ~[Kustvakt-full-0.62.3.jar:?]
at de.ids_mannheim.korap.KrillQuery._fromKoral(KrillQuery.java:222) ~[Kustvakt-full-0.62.3.jar:?]
The following Annis Query
results in