Update app.py

app.py

@@ -9,6 +9,7 @@ from functools import lru_cache
 nltk.download('words')
 nltk.download('punkt')  # Fix for missing tokenizer
 nltk.download('averaged_perceptron_tagger')
+nltk.download('tokenizers/punkt')  # Fix missing punkt_tab issue
 from nltk.corpus import words
 from nltk.tokenize import sent_tokenize
 from nltk import pos_tag