error fixes

app.py

@@ -100,7 +100,7 @@ with gr.Blocks() as demo:
 
     submit_btn.click(
         fn=process_query,
-        inputs=[role_dropdown, system_message, max_tokens, temperature, top_p]
+        inputs=[role_dropdown, system_message, max_tokens, temperature, top_p],
         outputs=output
     )