Update app/server.py

Re-enable dangerous serialization.

app/server.py

@@ -23,7 +23,7 @@ hf_llm = HuggingFaceHub(
 embedding_model_id = 'WhereIsAI/UAE-Large-V1'
 embeddings_model = HuggingFaceEmbeddings(model_name=embedding_model_id)
 
-faiss_index = FAISS.load_local("langserve_index", embeddings_model)
+faiss_index = FAISS.load_local("langserve_index", embeddings_model, allow_dangerous_deserialization=True)
 retriever = faiss_index.as_retriever()
 # retriever = faiss_index.as_retriever(search_kwargs={"k": 2})