Update app.py

app.py

@@ -88,7 +88,7 @@ def load_environment():
 def preload_modtran_document():
     global vectorstore_global
     embeddings = GeminiEmbeddings()
-    vectorstore = FAISS.load_local("modtran_vectorstore", embeddings)
+    vectorstore = FAISS.load_local("modtran_vectorstore", embeddings, allow_dangerous_deserialization=True)
     set_global_vectorstore(vectorstore)
     st.session_state.chat_ready = True