'No module named 'django.conf.urls.defaults'

I upgraded from django 3.2.5 to django 4.0.4. I know that this 'django.conf.urls.defaults' must be deprecated. My problem is that I don't get this error in the development environment but when I push to production, it shows the error. Why is this so??? Also I tried to locate the file so that I can change that line of code to the correct one but could find it's location. It's giving me this path which I can't see how to get to (/workspace/.heroku/python/lib/python3.9/site-packages/django/conf/urls/__init__.py))



Solution 1:[1]

After trying all the possibles at my level , I had to revert to django 3.2.5

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Solution 1 fakeMake