Update app.py

app.py

@@ -60,7 +60,8 @@ class ChatModel:
             )
             self.vectorstore[store_name] = FAISS.load_local(
                 f"vector_stores/{store_name}", 
-                embeddings
+                embeddings,
+                allow_dangerous_deserialization=True
             )
         return self.vectorstore[store_name]