Update app.py

app.py

@@ -104,7 +104,7 @@ gr.ChatInterface(
         gr.Slider(0, 1, 0.95, label="Top P sampling"),
     ],
     theme=gr.themes.Soft(primary_hue=COLOR).set(
-        background_fill_primary="#020417",
+        background_fill_primary_dark="#020417",
         background_fill_secondary_dark="#020417",
         body_background_fill_dark="#020417",
         block_background_fill_dark="#020417",