org.hl7.fhir.exceptions.DefinitionException: StructureDefinition is not for an profile - can't be compared (left: Identifier)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.check(StructureDefinitionComparer.java:187)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compare(StructureDefinitionComparer.java:123)
	at org.hl7.fhir.r5.comparison.ComparisonSession.compare(ComparisonSession.java:100)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.intersectTypes(StructureDefinitionComparer.java:981)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:271)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:374)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:287)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compare(StructureDefinitionComparer.java:167)
	at org.hl7.fhir.r5.comparison.ComparisonSession.compare(ComparisonSession.java:100)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.checkAddTypeUnion(StructureDefinitionComparer.java:909)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.unionTypes(StructureDefinitionComparer.java:846)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:270)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:374)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:287)
	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compare(StructureDefinitionComparer.java:167)
	at org.hl7.fhir.r5.comparison.ComparisonSession.compare(ComparisonSession.java:100)
	at org.hl7.fhir.igtools.publisher.comparators.PreviousVersionComparator.finishChecks(PreviousVersionComparator.java:257)
	at org.hl7.fhir.igtools.publisher.Publisher.checkConformanceResources(Publisher.java:5818)
	at org.hl7.fhir.igtools.publisher.Publisher.loadConformance(Publisher.java:5660)
	at org.hl7.fhir.igtools.publisher.Publisher.createIg(Publisher.java:1126)
	at org.hl7.fhir.igtools.publisher.Publisher.execute(Publisher.java:972)
	at org.hl7.fhir.igtools.publisher.Publisher.main(Publisher.java:12371)