    java.lang.ClassCastException: class org.hl7.fhir.r5.comparison.ResourceComparer$PlaceHolderComparison cannot be cast to class org.hl7.fhir.r5.comparison.StructureDefinitionComparer$ProfileComparison (org.hl7.fhir.r5.comparison.ResourceComparer$PlaceHolderComparison and org.hl7.fhir.r5.comparison.StructureDefinitionComparer$ProfileComparison are in unnamed module of loader 'app')
    	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.intersectTypes(StructureDefinitionComparer.java:1070)
    	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:279)
    	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareChildren(StructureDefinitionComparer.java:382)
    	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compareElements(StructureDefinitionComparer.java:295)
    	at org.hl7.fhir.r5.comparison.StructureDefinitionComparer.compare(StructureDefinitionComparer.java:173)
    	at org.hl7.fhir.r5.comparison.ComparisonSession.compare(ComparisonSession.java:107)
    	at org.hl7.fhir.igtools.publisher.comparators.IpaComparator.finishChecks(IpaComparator.java:232)
    	at org.hl7.fhir.igtools.publisher.Publisher.checkConformanceResources(Publisher.java:6588)
    	at org.hl7.fhir.igtools.publisher.Publisher.loadConformance2(Publisher.java:6392)
    	at org.hl7.fhir.igtools.publisher.Publisher.createIg(Publisher.java:1208)
    	at org.hl7.fhir.igtools.publisher.Publisher.execute(Publisher.java:1067)
    	at org.hl7.fhir.igtools.publisher.Publisher.main(Publisher.java:15577)
    	at org.hl7.fhir.igtools.web.PublicationProcess.runBuild(PublicationProcess.java:1080)
    	at org.hl7.fhir.igtools.web.PublicationProcess.doPublish(PublicationProcess.java:556)
    	at org.hl7.fhir.igtools.web.PublicationProcess.publishInner2(PublicationProcess.java:469)
    	at org.hl7.fhir.igtools.web.PublicationProcess.publishInner(PublicationProcess.java:286)
    	at org.hl7.fhir.igtools.web.PublicationProcess.publish(PublicationProcess.java:146)
    	at org.hl7.fhir.igtools.publisher.Publisher.main(Publisher.java:15325)