i get this problem

[CquptZA]

when i use CrossValidationExperiment to test and change
// e.g. -arff emotions.arff
String arffFilename = "C:\emotions.arff";
// e.g. -xml emotions.xml
String xmlFilename = "C:\emotions.xml";
get error :
Loading the dataset...
十一月 05, 2022 1:52:36 下午 mulan.examples.CrossValidationExperiment main
严重: null
java.lang.NullPointerException
at javax.xml.validation.SchemaFactory.newSchema(SchemaFactory.java:670)
at mulan.data.LabelsBuilder.createLabels(LabelsBuilder.java:113)
at mulan.data.LabelsBuilder.createLabels(LabelsBuilder.java:75)
at mulan.data.MultiLabelInstances.loadLabelsMeta(MultiLabelInstances.java:574)
at mulan.data.MultiLabelInstances.(MultiLabelInstances.java:202)
at mulan.examples.CrossValidationExperiment.main(CrossValidationExperiment.java:53)

Process finished with exit code 0

[liufanghan]

I had the same problem.