Update app.py

app.py

@@ -1,7 +1,7 @@
 import streamlit as st
 from dotenv import load_dotenv
 from PyPDF2 import PdfReader
-from langchain_text_splitter import CharacterTextSplitter
+from langchain.text_splitter import CharacterTextSplitter
 from langchain.embeddings import OpenAIEmbeddings, HuggingFaceEmbeddings
 from langchain.vectorstores import FAISS
 from langchain.chat_models import ChatOpenAI
@@ -39,7 +39,7 @@ def get_vectorstore(text_chunks):
 
 def get_conversation_chain(vectorstore):
     # llm = ChatOpenAI()
-    llm = HuggingFaceHub(repo_id="HuggingFaceH4/zephyr-7b-beta", model_kwargs={"temperature":0.5, "max_length":512})
+    llm = HuggingFaceHub(repo_id="HuggingFaceH4/zephyr-7b-beta", model_kwargs={"temperature":0.5, "max_length":512, "return_full_text":False})
 
     memory = ConversationBufferMemory(
         memory_key='chat_history', return_messages=True)