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Prevent multiple session for user works locally but not when uploaded to pythonanywhere

I am getting this error when I uploaded the site to pythonanywhere (It was working fine locally)

Environment:

Request Method: GET
Request URL: careerabacusgallery.pythonanywhere...

Django Version: 4.0.1
Python Version: 3.9.5
Installed Applications:
['onlinetest.apps.OnlinetestConfig',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'onlinetest.middleware.OneSessionPerUserMiddleware']

Traceback (most recent call last):
File "/home/careerabacusgallery/.virtualenvs/test/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
response = get_response(request)
File "/home/careerabacusgallery/statelevel/onlinetest/middleware.py", line 19, in call
Session.objects.get(session_key=stored_session_key).delete()
File "/home/careerabacusgallery/.virtualenvs/test/lib/python3.9/site-packages/django/db/models/manager.py", line 85, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/home/careerabacusgallery/.virtualenvs/test/lib/python3.9/site-packages/django/db/models/query.py", line 439, in get
raise self.model.DoesNotExist(

Exception Type: DoesNotExist at /lgi
Exception Value: Session matching query does not exist.

It looks like you forgot about the migrations?