Update app.py

app.py

@@ -1,7 +1,7 @@
 import streamlit as st
 from streamlit_chat import message
 from langchain.chains import ConversationalRetrievalChain
-from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain.embeddings import HuggingFaceEmbeddings
 from langchain.llms import Replicate
 from langchain.text_splitter import CharacterTextSplitter
 from langchain.vectorstores import FAISS
@@ -56,9 +56,8 @@ def display_chat_history(chain):
 def create_conversational_chain(vector_store):
     load_dotenv()
 
-    replicate_api_token = os.getenv("REPLICATE_API_TOKEN")
-    if not replicate_api_token:
-        raise ValueError("Replicate API token is not set. Please set the REPLICATE_API_TOKEN environment variable.")
+    replicate_api_token = "r8_MgTUrfPJIluDoXUhG7JXuPAYr6PonOW4BJCj0"
+    os.environ["REPLICATE_API_TOKEN"] = replicate_api_token
 
     llm = Replicate(
         streaming=True,
@@ -70,8 +69,8 @@ def create_conversational_chain(vector_store):
     memory = ConversationBufferMemory(memory_key="chat_history", return_messages=True)
 
     chain = ConversationalRetrievalChain.from_llm(llm=llm, chain_type='stuff',
-                                                  retriever=vector_store.as_retriever(search_kwargs={"k": 2}),
-                                                  memory=memory)
+                                                 retriever=vector_store.as_retriever(search_kwargs={"k": 2}),
+                                                 memory=memory)
     return chain
 
 def main():
@@ -111,4 +110,4 @@ def main():
         display_chat_history(chain)
 
 if __name__ == "__main__":
-    main()
+    main()