fix decode bug because new huggingface version

convlab2/policy/genTUS/train_model.py

@@ -201,6 +201,7 @@ def compute_metrics(eval_preds):
     preds, labels = eval_preds
     if isinstance(preds, tuple):
         preds = preds[0]
+    preds = np.where(preds != -100, preds, TOKENIZER.pad_token_id)
     decoded_preds = TOKENIZER.batch_decode(
         preds, skip_special_tokens=True, max_length=400)