Update app.py

app.py

@@ -19,7 +19,7 @@ from langchain_community.embeddings import HuggingFaceEmbeddings
 from llama_index.core import StorageContext, load_index_from_storage, VectorStoreIndex, SimpleDirectoryReader, ChatPromptTemplate
 from llama_index.llms.huggingface import HuggingFaceInferenceAPI
 from llama_index.embeddings.huggingface import HuggingFaceEmbedding
-
+from llama_index.core import Settings
 
 
 #access_token = os.getenv("HUGGINGFACE_API_KEY")