update files

app.py

@@ -29,7 +29,7 @@ def load_pdf_chunks(pdf_path):
 
 @st.cache_resource
 def load_model_and_index(chunks):
-    model = SentenceTransformer('sentence-transformers/all-MiniLM-L6-v2')
+    model = SentenceTransformer('models/all-MiniLM-L6-v2')
     embeddings = model.encode(chunks)
     faiss_index = faiss.IndexFlatL2(embeddings.shape[1])
     faiss_index.add(np.array(embeddings))