Comment 0 for bug 2039226

On Ubuntu Mantic, the dashboard fails to load and the apache error log shows:

[Thu Oct 12 20:33:48.383727 2023] [wsgi:error] [pid 52899:tid 140293563209408] ERROR:root:cannot import name 'ugettext_lazy' from 'django.utils.translation' (/usr/lib/python3/dist-packages/django/utils/translation/__init__.py)
[Thu Oct 12 20:33:48.383757 2023] [wsgi:error] [pid 52899:tid 140293563209408] Traceback (most recent call last):
[Thu Oct 12 20:33:48.383764 2023] [wsgi:error] [pid 52899:tid 140293563209408] File "/usr/lib/python3/dist-packages/openstack_dashboard/utils/settings.py", line 58, in import_submodules
[Thu Oct 12 20:33:48.383769 2023] [wsgi:error] [pid 52899:tid 140293563209408] submodule = import_module(name)
[Thu Oct 12 20:33:48.383773 2023] [wsgi:error] [pid 52899:tid 140293563209408] ^^^^^^^^^^^^^^^^^^^
[Thu Oct 12 20:33:48.383777 2023] [wsgi:error] [pid 52899:tid 140293563209408] File "/usr/lib/python3.11/importlib/__init__.py", line 126, in import_module
[Thu Oct 12 20:33:48.383787 2023] [wsgi:error] [pid 52899:tid 140293563209408] return _bootstrap._gcd_import(name[level:], package, level)
[Thu Oct 12 20:33:48.383791 2023] [wsgi:error] [pid 52899:tid 140293563209408] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[Thu Oct 12 20:33:48.383795 2023] [wsgi:error] [pid 52899:tid 140293563209408] File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
[Thu Oct 12 20:33:48.383799 2023] [wsgi:error] [pid 52899:tid 140293563209408] File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
[Thu Oct 12 20:33:48.383803 2023] [wsgi:error] [pid 52899:tid 140293563209408] File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
[Thu Oct 12 20:33:48.383807 2023] [wsgi:error] [pid 52899:tid 140293563209408] File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
[Thu Oct 12 20:33:48.383811 2023] [wsgi:error] [pid 52899:tid 140293563209408] File "<frozen importlib._bootstrap_external>", line 940, in exec_module
[Thu Oct 12 20:33:48.383814 2023] [wsgi:error] [pid 52899:tid 140293563209408] File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
[Thu Oct 12 20:33:48.383818 2023] [wsgi:error] [pid 52899:tid 140293563209408] File "/usr/lib/python3/dist-packages/openstack_dashboard/enabled/_1370_project_container_infra_panel_group.py", line 14, in <module>
[Thu Oct 12 20:33:48.383823 2023] [wsgi:error] [pid 52899:tid 140293563209408] from django.utils.translation import ugettext_lazy as _

It looks like the charm template needs updating to work with Django 4.x in Mantic.

See upstream commit in horizon:

commit cd7c1b5110fe1f64cd9dfbeb1072b37912d0efee
Author: Akihiro Motoki <email address hidden>
Date: Wed Jan 26 22:42:15 2022 +0900

    Address RemovedInDjango40Warning (2)

    django.utils.translation.ugettext(), ugettext_lazy(), ugettext_noop(),
    ungettext(), and ungettext_lazy() are deprecated in favor of the
    functions that they’re aliases for: django.utils.translation.gettext(),
    gettext_lazy(), gettext_noop(), ngettext(), and ngettext_lazy().

    https://docs.djangoproject.com/en/4.0/releases/3.0/#id3

    Change-Id: I77878f84e9d10cf6a136dada81eabf4e18676250