Update app.py

app.py

@@ -619,7 +619,7 @@ def chat_with_groq(message, history):
         return f"Error: {str(e)}"
 
 # ── Gradio UI ─────────────────────────────────────────────────────────────────
-with gr.Blocks(title="CKD-MultiVision", theme=gr.themes.Soft()) as demo:
+with gr.Blocks(title="CKD-MultiVision") as demo:
     gr.Markdown("""
     #  CKD-MultiVision
     ### Multimodal AI System for Early Chronic Kidney Disease Detection
@@ -708,7 +708,7 @@ with gr.Blocks(title="CKD-MultiVision", theme=gr.themes.Soft()) as demo:
         # ── Tab 2: CKD Health Coach ────────────────────────────────────────
         with gr.TabItem(" CKD Health Coach"):
             gr.Markdown("### Ask about diet, lifestyle, exercise, and kidney health.")
-            chatbot    = gr.Chatbot(height=450, type="messages")
+            chatbot    = gr.Chatbot(height=450)
             chat_input = gr.Textbox(placeholder="Ask a question about CKD...", label="Your Message")
             send_btn   = gr.Button("Send", variant="primary")
             gr.Examples(
@@ -793,12 +793,12 @@ with gr.Blocks(title="CKD-MultiVision", theme=gr.themes.Soft()) as demo:
         if not message.strip():
             return history, ""
         bot_response = chat_with_groq(message, history)
-        history.append({"role": "user",      "content": message})
-        history.append({"role": "assistant", "content": bot_response})
+        history = history or []
+        history.append((message, bot_response))
         return history, ""
 
     send_btn.click(fn=respond, inputs=[chat_input, chatbot], outputs=[chatbot, chat_input])
     chat_input.submit(fn=respond, inputs=[chat_input, chatbot], outputs=[chatbot, chat_input])
 
 if __name__ == "__main__":
-    demo.launch()
+    demo.launch(theme=gr.themes.Soft())