Update app.py

app.py

@@ -9,7 +9,7 @@ from llama_index.core import (
 from llama_index.core.memory import ChatMemoryBuffer
 from llama_index.llms.huggingface import HuggingFaceLLM
 from llama_index.embeddings.langchain import LangchainEmbedding
-from langchain.embeddings.huggingface import HuggingFaceEmbeddings
+from langchain_community.embeddings import HuggingFaceEmbeddings
 
 SYSTEM_PROMPT = """
 You are a friendly café assistant for Café Eleven. Your job is to: