Update app.py

app.py

@@ -25,15 +25,12 @@ os.environ["HF_HUB_CACHE"] = "/tmp/huggingface/hf_cache"
 os.environ["HF_HUB_DOWNLOAD_TIMEOUT"] = "60"
 
 # Load Required Modules 
-# from langchain.embeddings import HuggingFaceEmbeddings
-from langchain_huggingface import HuggingFaceEmbeddings
+from langchain.embeddings import HuggingFaceEmbeddings
 from langchain.vectorstores import Chroma, FAISS
 from langchain.chains import RetrievalQA
 from langchain.prompts import PromptTemplate
-# from langchain.llms import HuggingFacePipeline
-from langchain_huggingface import HuggingFacePipeline
-# from langchain.chat_models import ChatOpenAI
-from langchain_openai import ChatOpenAI
+from langchain.llms import HuggingFacePipeline
+from langchain.chat_models import ChatOpenAI
 from langchain.chains import ConversationalRetrievalChain
 from langchain.memory import ConversationBufferMemory
 from langchain_community.document_loaders import PyPDFLoader, TextLoader, UnstructuredWordDocumentLoader