Fix: wrong error message

Author: taewhi

traindb-core/src/main/java/traindb/engine/TrainDBFileModelRunner.java

@@ -142,7 +142,7 @@ public String listHyperparameters(String className, String uri) throws Exception
  process.waitFor();
 
  if (process.exitValue() != 0) {
- throw new TrainDBException("failed to train model");
+ throw new TrainDBException("failed to list hyperparameters");
  }
 
  String hyperparamsInfo =