Exception in thread "main" java.io.InvalidClassException: weka.core.Instance; class invalid for deserialization

[Grzegorz07]

Hello,

when I try to start your code locally I get this error: Exception in thread "main" java.io.InvalidClassException: weka.core.Instance; class invalid for deserialization at java.io.ObjectStreamClass$ExceptionInfo.newInvalidClassException(ObjectStreamClass.java:150) at java.io.ObjectStreamClass.checkDeserialize(ObjectStreamClass.java:768) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1775) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1707) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1345) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371) at com.ml.services.LoadData.getModel(LoadData.java:65) at com.ml.services.KNNService.getModel(KNNService.java:72) at com.ml.Labor4DmAbackendApplication.main(Labor4DmAbackendApplication.java:48) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

Could you help me?