Update app.py

app.py

@@ -50,9 +50,12 @@ if uploaded_file:
             chunks.append(sentence)
         return chunks
 
-    if 'chunks' not in st.session_state:
-        st.session_state.chunks = convert_to_chunks(df)
-        st.session_state.embeddings = EMBED_MODEL.encode(st.session_state.chunks)
+    # Ensure initialization
+    if 'chunks' not in st.session_state or 'embeddings' not in st.session_state:
+        chunks = convert_to_chunks(df)
+        embeddings = EMBED_MODEL.encode(chunks)
+        st.session_state.chunks = chunks
+        st.session_state.embeddings = embeddings
 
     # --- Anomaly Detection ---
     st.subheader("🚨 Anomaly Detection (Isolation Forest)")