org.hl7.fhir.exceptions.DefinitionException: StructureDefinition is not for an profile - can't be compared (left: Identifier)
	at org.hl7.fhir.r5.comparison.ProfileComparer.check(ProfileComparer.java:158)
	at org.hl7.fhir.r5.comparison.ProfileComparer.compare(ProfileComparer.java:113)
	at org.hl7.fhir.r5.comparison.ComparisonSession.compare(ComparisonSession.java:94)
	at org.hl7.fhir.r5.comparison.ProfileComparer.intersectTypes(ProfileComparer.java:665)
	at org.hl7.fhir.r5.comparison.ProfileComparer.compareElements(ProfileComparer.java:227)
	at org.hl7.fhir.r5.comparison.ProfileComparer.compareChildren(ProfileComparer.java:327)
	at org.hl7.fhir.r5.comparison.ProfileComparer.compareElements(ProfileComparer.java:243)
	at org.hl7.fhir.r5.comparison.ProfileComparer.compare(ProfileComparer.java:145)
	at org.hl7.fhir.r5.comparison.ComparisonSession.compare(ComparisonSession.java:94)
	at org.hl7.fhir.igtools.publisher.PreviousVersionComparator.finishChecks(PreviousVersionComparator.java:257)
	at org.hl7.fhir.igtools.publisher.Publisher.checkConformanceResources(Publisher.java:4831)
	at org.hl7.fhir.igtools.publisher.Publisher.loadConformance(Publisher.java:4737)
	at org.hl7.fhir.igtools.publisher.Publisher.createIg(Publisher.java:1010)
	at org.hl7.fhir.igtools.publisher.Publisher.execute(Publisher.java:860)
	at org.hl7.fhir.igtools.publisher.Publisher.main(Publisher.java:10155)