Update app.py

app.py

@@ -60,7 +60,7 @@ def predict(message, history):
         # num_beams=1,
         max_new_tokens=300,
         do_sample=True,
-        top_k=3,
+        top_k=4,
         num_beams=4,
         use_cache=False,
         temperature=0.2,