fix app.py - page config-

app.py

@@ -2,6 +2,13 @@ import streamlit as st
 from transformers import AutoModelForCausalLM, AutoTokenizer
 import torch
 
+# Set page configuration - MUST be the first Streamlit command
+st.set_page_config(
+    page_title="EdStem Chatbot Demo",
+    page_icon="🤖",
+    layout="wide",
+)
+
 # Load model and tokenizer
 @st.cache_resource
 def load_model():
@@ -13,12 +20,6 @@ def load_model():
 tokenizer, model = load_model()
 
 # App UI
-st.set_page_config(
-    page_title="EdStem Chatbot Demo",
-    page_icon="🤖",
-    layout="wide",
-)
-
 st.title("🤖 EdStem Chatbot Demo")
 st.markdown(
     """