Update app.py

app.py

@@ -151,7 +151,7 @@ def predict(cfg, sequences):
                     if cfg.task == "classification"
                     else model(inputs)
                 )
-        predictions.extend(preds.cpu().tolist())
+        predictions += preds.cpu().tolist()
 
     predictions = list(itertools.chain.from_iterable(predictions))