fixing bug

app.py

@@ -1,19 +1,22 @@
 import streamlit as st
-import streamlit_ace as st_ace
-from utils import execute_code, export_session
-from chatbot import render_chatbot
-import json
 
-# 1️⃣ Theme selector in the sidebar
-theme = st.sidebar.selectbox("🎨 Editor Theme", ["Light", "Dark"])
-ace_theme = "chrome" if theme == "Light" else "monokai"
-
-# Page configuration
+# ——————————————————————————————————————————————
+# 1️⃣ PAGE CONFIG (MUST BE FIRST)
 st.set_page_config(
     page_title="Interactive Code Editor with AI Assistant",
     page_icon="💻",
     layout="wide"
 )
+# ——————————————————————————————————————————————
+
+# 2️⃣ THEME SELECTOR
+theme = st.sidebar.selectbox("🎨 Editor Theme", ["Light", "Dark"])
+ace_theme = "chrome" if theme == "Light" else "monokai"
+
+import streamlit_ace as st_ace
+from utils import execute_code, export_session
+from chatbot import render_chatbot
+import json
 
 # Initialize session state
 if 'code_output' not in st.session_state:
@@ -37,7 +40,7 @@ with col1:
     code = st_ace.st_ace(
         placeholder="Write your Python code here...",
         language="python",
-        theme=ace_theme,        # ← use selected theme
+        theme=ace_theme,        # ← use the selected theme
         keybinding="vscode",
         font_size=14,
         min_lines=25,