Update app.py

app.py

@@ -57,8 +57,8 @@ with gr.Blocks() as demo:
 
     # First add user's message to the conversation history
     # Then get reply from the tutor and add that to the conversation history
-    user_chat_input.onkeydown(
-        fn = lambda event: handleKeyPress(event, add_user_message), 
+    user_chat_submit.click(
+        fn = add_user_message, 
         inputs = [user_chat_input, study_tutor], 
         outputs = [user_chat_input, chatbot, study_tutor], 
         queue=False