Updated main.py

app.py

@@ -40,8 +40,8 @@ def chunk_text(text, chunk_size=500, overlap=50):
 
 # Build FAISS index from chunks
 @st.cache_resource
-def build_faiss_index(chunks, embedder):
-    embeddings = embedder.encode(chunks)
+def build_faiss_index(chunks, _embedder):  # underscore to avoid hashing issues
+    embeddings = _embedder.encode(chunks)
     dim = embeddings.shape[1]
     index = faiss.IndexFlatL2(dim)
     index.add(embeddings)