Update app.py

app.py

@@ -79,15 +79,15 @@ temperature = st.sidebar.slider("Temperature", 0.0, 1.0, 0.7, 0.1)
 max_new_tokens = st.sidebar.number_input("Max New Tokens", 50, 500, 256, step=50)
 top_p = st.sidebar.slider("Top P", 0.1, 1.0, 0.9, 0.1)
 
-if "messages" not in st.session_state:
-    st.session_state.messages = [{"role": "system", "content": system_prompt}]
-
 system_prompt = st.sidebar.text_area(
     "System Prompt",
     "You are a food critic Chatbot. Reply in the style of a New York Times food critic",
     key="system_prompt", on_change=prompt_changed, args=("system_prompt")
     )
 
+if "messages" not in st.session_state:
+    st.session_state.messages = [{"role": "system", "content": system_prompt}]
+
 for message in st.session_state.messages[1:]:
     with st.chat_message(message['role'], avatar=icons[message['role']]):
         st.write(message['content'])