Update app.py

app.py

@@ -740,7 +740,7 @@ agent = smolagents.CodeAgent(
     verbosity_level=2,  # show steps in logs for class demo
 )
 
-chat = gr.Chatbot(height=420, type="messages")  # make it explicit it's messages-format
+chat = gr.Chatbot(height=420)
 
 def respond(message, history):
     try:
@@ -751,11 +751,9 @@ def respond(message, history):
     if history is None:
         history = []
 
-    # history is now a list of {"role": ..., "content": ...} dicts
-    history = history + [
-        {"role": "user", "content": message},
-        {"role": "assistant", "content": out},
-    ]
+    # MUST be list of lists, NOT tuples
+    history = history + [[message, out]]
+
     return "", history
 
 with gr.Blocks(theme=gr.themes.Ocean()) as demo: