Update app.py

app.py

@@ -623,7 +623,7 @@ with gr.Blocks() as demo:
         # ===== EXPLAIN =====
         with gr.TabItem("🔍 Explain"):
             with gr.Row():
-                with Column():
+                with gr.Column():
                     explain_input = gr.Code(label="Code", lines=10)
                     explain_detail = gr.Radio(["Brief", "Normal", "Detailed"], value="Normal")
                     explain_btn = gr.Button("🔍 Explain", variant="primary")