changed the parameter

app.py

@@ -3,9 +3,8 @@ from chatbot import process_query
 
 st.title("Kivy Chatbot Backend")
 
-# Check if a request is a POST
-user_input = st.experimental_get_query_params().get("user_input", [None])[0]
-
-if user_input:
-    response = process_query(user_input)
-    st.write(response)
+user_input = st.text_input("Ask a question:")
+if st.button("Get Response"):
+    if user_input:
+        response = process_query(user_input)
+        st.write(f"Response: {response}")