Update app.py

app.py

@@ -4,6 +4,13 @@ import numpy as np
 import openai
 from sentence_transformers import SentenceTransformer
 from nltk.tokenize import sent_tokenize
+import nltk
+
+# Download the required NLTK data
+nltk.download('punkt')
+nltk.download('punkt_tab')
+
+
 
 # Load the Ubuntu manual from a .txt file
 with open("ubuntu_manual.txt", "r", encoding="utf-8") as file: