Update app.py

app.py

@@ -56,8 +56,13 @@ def predict(_chatbot, task_history, user_input):
     audio_idx = 1
     pre = ""
     last_audio = None
+    for i, item in enumerate(history_cp):
+        if len(item) != 2:
+            print(f"Error: Expected a tuple of length 2, but got {item}")
+            continue  
+
+        q, a = item 
 
-    for i, (q, a) in enumerate(history_cp):
         if isinstance(q, (tuple, list)):
             last_audio = q[0]
             q = f'Audio {audio_idx}: <audio>{q[0]}</audio>'
@@ -68,6 +73,9 @@ def predict(_chatbot, task_history, user_input):
             history_filter.append((pre, a))
             pre = ""
 
+    if not history_filter:
+        return _chatbot
+
     history, message = history_filter[:-1], history_filter[-1][0]
     response, history = model.chat(tokenizer, message, history=history)