Update app.py

app.py

@@ -157,11 +157,11 @@ def respond(message, history, mom_type) :
 # chatbot = gr.ChatInterface(respond, type="messages")
 
 custom_theme = gr.themes.Soft().set(
-    primary="purple",
-    secondary="fuchsia",
-    neutral="gray",
-    spacing="lg",
-    radius="lg",
+    primary_hue="purple",
+    secondary_hue="fuchsia",
+    neutral_hue="gray",
+    spacing_size="lg",
+    radius_size="lg",
     text_size="lg",
     font=[gr.themes.GoogleFont("IBM Plex Sans"), "sans-serif"],
     font_mono=[gr.themes.GoogleFont("IBM Plex Mono"), "monospace"]