Not a valid (absolute) IRI

[fatemeShafiei]

I'm trying to load the owl file with a mapping file according to the "OntopOWLReasonerNativeMappingExample.java".

I get this error:

java.lang.IllegalArgumentException: Not a valid (absolute) IRI: 
	at org.eclipse.rdf4j.model.impl.SimpleIRI.setIRIString(SimpleIRI.java:74)
	at org.eclipse.rdf4j.model.impl.SimpleIRI.<init>(SimpleIRI.java:63)
	at org.eclipse.rdf4j.model.impl.AbstractValueFactory.createIRI(AbstractValueFactory.java:87)
	at org.apache.commons.rdf.rdf4j.RDF4J.createIRI(RDF4J.java:607)
	at org.apache.commons.rdf.rdf4j.RDF4J.createIRI(RDF4J.java:104)
	at it.unibz.inf.ontop.model.term.impl.TermFactoryImpl.getRDFConstant(TermFactoryImpl.java:114)
	at it.unibz.inf.ontop.model.term.functionsymbol.impl.RDFTermFunctionSymbolImpl.buildTermAfterEvaluation(RDFTermFunctionSymbolImpl.java:71)
	at it.unibz.inf.ontop.model.term.functionsymbol.impl.FunctionSymbolImpl.lambda$simplify$7(FunctionSymbolImpl.java:97)
	at java.util.Optional.orElseGet(Optional.java:267)
	at it.unibz.inf.ontop.model.term.functionsymbol.impl.FunctionSymbolImpl.simplify(FunctionSymbolImpl.java:97)
	at it.unibz.inf.ontop.model.term.impl.ImmutableFunctionalTermImpl.simplify(ImmutableFunctionalTermImpl.java:147)
	at it.unibz.inf.ontop.spec.mapping.transformer.impl.TermTypeMappingCaster.transformDefinition(TermTypeMappingCaster.java:103)
	at it.unibz.inf.ontop.spec.mapping.transformer.impl.TermTypeMappingCaster.lambda$transformTopSubstitution$1(TermTypeMappingCaster.java:87)
	at it.unibz.inf.ontop.utils.ImmutableCollectors.lambda$toMap$0(ImmutableCollectors.java:110)
	at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
	at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566)
	at it.unibz.inf.ontop.spec.mapping.transformer.impl.TermTypeMappingCaster.transformTopSubstitution(TermTypeMappingCaster.java:85)
	at it.unibz.inf.ontop.spec.mapping.transformer.impl.TermTypeMappingCaster.transform(TermTypeMappingCaster.java:68)
	at it.unibz.inf.ontop.spec.mapping.impl.SQLMappingExtractor.convertPPMapping(SQLMappingExtractor.java:167)
	at it.unibz.inf.ontop.spec.mapping.impl.SQLMappingExtractor.extract(SQLMappingExtractor.java:106)
	at it.unibz.inf.ontop.spec.impl.DefaultOBDASpecificationExtractor.extract(DefaultOBDASpecificationExtractor.java:46)
	at it.unibz.inf.ontop.injection.impl.OntopMappingConfigurationImpl.loadSpecification(OntopMappingConfigurationImpl.java:127)
	at it.unibz.inf.ontop.injection.impl.OntopMappingSQLConfigurationImpl.loadSpecification(OntopMappingSQLConfigurationImpl.java:87)
	at it.unibz.inf.ontop.injection.impl.OntopMappingSQLAllConfigurationImpl.loadSpecification(OntopMappingSQLAllConfigurationImpl.java:47)
	at it.unibz.inf.ontop.injection.impl.OntopSQLOWLAPIConfigurationImpl.loadOBDASpecification(OntopSQLOWLAPIConfigurationImpl.java:34)
	at it.unibz.inf.ontop.injection.impl.OntopOBDAConfigurationImpl.loadSpecification(OntopOBDAConfigurationImpl.java:44)
	at it.unibz.inf.ontop.injection.OntopSystemConfiguration.loadQueryEngine(OntopSystemConfiguration.java:20)
	at it.unibz.inf.ontop.owlapi.impl.QuestOWL.<init>(QuestOWL.java:110)
	at it.unibz.inf.ontop.owlapi.impl.QuestOWLFactory.createReasoner(QuestOWLFactory.java:81)
	at it.unibz.inf.ontop.owlapi.impl.QuestOWLFactory.createReasoner(QuestOWLFactory.java:94)
	at v2.service.Ontology2.run(Ontology2.java:56)
	at v2.service.Ontology2.main(Ontology2.java:27)

I appreciate it if you give me a hint about this error.