Update app.py

app.py

@@ -5,6 +5,8 @@ from dotenv import load_dotenv
 from llama_index.core import StorageContext, load_index_from_storage, VectorStoreIndex, SimpleDirectoryReader, ChatPromptTemplate, Settings
 import random
 import datetime
+from llama_index.llms.huggingface import HuggingFaceInferenceAPI
+from llama_index.embeddings.huggingface import HuggingFaceEmbedding
 
 # Load environment variables
 load_dotenv()