PWA /offline/ can not be accessed

The joined path (/css/django-pwa-app.css) is located outside of the base path component (/home/yuha/.cache/pypoetry/virtualenvs/aleksis-9I9iCPT3-py3.8/lib/python3.8/site-packages/django/contrib/admin/static)

changed milestone to %2.0a2

added type::bug label

created merge request !241 (merged) to address this issue

mentioned in merge request !241 (merged)

closed via merge request !241 (merged)

mentioned in commit 92c7d979