fixing error

chatbot.py

@@ -97,7 +97,8 @@ def render_chatbot(code: str, output: str, error: str):
     # Input area
     col1, col2 = st.columns([4, 1])
     with col1:
-        user_input = st.text_input(placeholder="Type your question here...")
+        user_input = st.text_input(key="chat_input",
+                                   placeholder="Type your question here...")
     with col2:
         send_clicked = st.button("🚀")  # Button to send the message