Update app.py

app.py

@@ -12,6 +12,7 @@ from langchain_community.llms import CTransformers
 from ctransformers import AutoModelForCausalLM
 from langchain.llms import HuggingFaceHub
 from transformers import AutoModelForCausalLM, AutoTokenizer
+from langchain.embeddings import HuggingFaceEmbeddings
 import os
 import transformers
 import torch