Update app.py

app.py

@@ -429,7 +429,7 @@ with gr.Blocks() as demo:
     gr.Markdown("# QLoRA Fine-tuning & RAG-based Chat Demo using Custom R1 Model")
     gr.Markdown("---")
 
-    with gr.TabbedInterface(
+    gr.TabbedInterface(  # <-- This should be inside `with gr.Blocks()`
         [
             gr.Interface(
                 fn=finetune_small_subset,
@@ -477,6 +477,6 @@ with gr.Blocks() as demo:
                 clear_btn=None
             )
         ]
-    )
+    )  # <-- No `render()`, just close `gr.TabbedInterface()`
 
 demo.launch()