Update app.py

app.py

@@ -3,7 +3,7 @@ from transformers import RagTokenizer, RagRetriever, RagSequenceForGeneration
 
 # Load the RAG model and tokenizer from Hugging Face
 tokenizer = RagTokenizer.from_pretrained("facebook/rag-token-nq")
-retriever = RagRetriever.from_pretrained("facebook/rag-token-nq", index_name="exact", use_dummy_dataset=True, trust_remote_code=True)
+retriever = RagRetriever.from_pretrained("facebook/rag-token-nq", index_name="legacy", use_dummy_dataset=True, trust_remote_code=True)
 model = RagSequenceForGeneration.from_pretrained("facebook/rag-token-nq")
 
 # Function to process the user query