Update app.py

app.py

@@ -6,14 +6,14 @@ import pathlib
 from tempfile import NamedTemporaryFile
 
 from transformers import AutoModelForCausalLM, AutoTokenizer, pipeline
-from langchain.llms import HuggingFacePipeline
-from langchain.llms import LlamaCpp
+from langchain_community.llms.huggingface_pipeline import HuggingFacePipeline
+from langchain_community.llms import LlamaCpp
 from langchain import PromptTemplate, LLMChain
 from langchain.callbacks.manager import CallbackManager
 from langchain.callbacks.streaming_stdout import StreamingStdOutCallbackHandler
-from langchain.embeddings import HuggingFaceEmbeddings
+from langchain_community.embeddings import HuggingFaceEmbeddings
 from langchain.chains import RetrievalQA
-from langchain.vectorstores import FAISS
+from langchain_community.vectorstores import FAISS
 from PyPDF2 import PdfReader
 import os
 import time