fix

app.py

@@ -15,7 +15,7 @@ from langchain.schema.runnable import RunnablePassthrough
 from langchain.embeddings.openai import OpenAIEmbeddings
 from langchain.embeddings import CacheBackedEmbeddings
 from langchain.storage import LocalFileStore
-from langchain.vectorstores import pinecone
+from langchain.vectorstores import Pinecone
 
 from operator import itemgetter
 import pinecone