Update app.py

app.py

@@ -7,6 +7,9 @@ from sentence_transformers import SentenceTransformer, util
 import numpy as np
 from LexRank import *
 
+nltk.download('punkt')
+
+
 def lex_rank(in_text, threshold=None , ex_sent=4 ,model_in = 'KBLab/sentence-bert-swedish-cased', language='swedish' ):
     if threshold == 'None':
       threshold=None