Update main.py

main.py

@@ -3,9 +3,10 @@ import pinecone
 
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
-from langchain.vectorstores import Pinecone
-from langchain.llms import OpenAI
 from langchain.chains import RetrievalQA
+from langchain.embeddings.openai import OpenAIEmbeddings
+from langchain.llms import OpenAI
+from langchain.vectorstores import Pinecone
 
 PINECONE_API_KEY = os.getenv('PINECONE_API_KEY')
 PINECONE_ENV = os.getenv('PINECONE_ENV')