Update retrival.py

retrival.py

@@ -3,7 +3,7 @@ from langchain_community.document_loaders import DirectoryLoader
 from langchain_community.embeddings import HuggingFaceEmbeddings
 # from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain_text_splitters import RecursiveCharacterTextSplitter
-from langchain.schema import Document
+# from langchain.schema import Document
 from langchain_core.documents import Document
 from langchain_community.vectorstores import Chroma
 import os