org.hl7.fhir.exceptions.DefinitionException: Found slices with no slicing details at Observation.category
	at org.hl7.fhir.r5.utils.DefinitionNavigator.loadChildren(DefinitionNavigator.java:213)
	at org.hl7.fhir.r5.utils.DefinitionNavigator.children(DefinitionNavigator.java:170)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareDiffChildren(StructureDefinitionComparer.java:572)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareDiff(StructureDefinitionComparer.java:477)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compare(StructureDefinitionComparer.java:181)
	at org.hl7.fhir.r5.comparison.ComparisonSession.compare(ComparisonSession.java:107)
	at org.hl7.fhir.igtools.publisher.comparators.PreviousVersionComparator.finishChecks(PreviousVersionComparator.java:266)
	at org.hl7.fhir.igtools.publisher.Publisher.checkConformanceResources(Publisher.java:6708)
	at org.hl7.fhir.igtools.publisher.Publisher.loadConformance2(Publisher.java:6491)
	at org.hl7.fhir.igtools.publisher.Publisher.createIg(Publisher.java:1174)
	at org.hl7.fhir.igtools.publisher.Publisher.execute(Publisher.java:1029)
	at org.hl7.fhir.igtools.publisher.Publisher.main(Publisher.java:15805)