Error while taking new sentences as input

[agrawalanshul053]

[11/Dec/2021 14:38:45] "GET / HTTP/1.1" 200 4912
form is valid
http://sanskrit.inria.fr/cgi-bin/SKT/sktgraph.cgi?lex=SH&st=t&us=f&cp=t&text=rAmasya+BAryA+sIwA+wasya+anujaH+lakRmaNaH+ca+rAmeNa+saha&t=WX&topic=&mode=g&corpmode=&corpdir=&sentno=
Internal Server Error: /presentdata/
Traceback (most recent call last):
File "/home/jivnesh/anaconda3/envs/SHRenv/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
response = get_response(request)
File "/home/jivnesh/anaconda3/envs/SHRenv/lib/python3.6/site-packages/django/core/handlers/base.py", line 115, in get_response
response = self.process_exception_by_middleware(e, request)
File "/home/jivnesh/anaconda3/envs/SHRenv/lib/python3.6/site-packages/django/core/handlers/base.py", line 113, in get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/jivnesh/Downloads/Segmentation/mysite/annotatorapp/views.py", line 177, in presentdataview
dict = codeforline.getdatafromsite(Sentence)
File "/home/jivnesh/Downloads/Segmentation/mysite/annotatorapp/codeforline.py", line 76, in getdatafromsite
ldata = str(re.search(r'{.?}[(.)]', onclickdata).group(1))
AttributeError: 'NoneType' object has no attribute 'group'
[11/Dec/2021 14:38:54] "POST /presentdata/ HTTP/1.1" 500 111772

I have copied the error which was coming while taking new input. I am using Ubuntu 16.04. The app is working fine with default and save sentences but not with new sentences.