Remove bogus Plural-Forms headers.
Several django.po files contained the header.
"Plural-Forms: nplurals=INTEGER; plural=EXPRESSION;\n"
This causes issues like
ERROR 2023-10-10 20:50:14,739 log 22484 140465236453184 Internal Server Error: /archives/list/python-dev@python.org/
Traceback (most recent call last):
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/core/handlers/exception.py", line 56, in inner
response = get_response(request)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/sentry_sdk/integrations/django/middleware.py", line 175, in __call__
return f(*args, **kwargs)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/ddtrace/contrib/trace_utils.py", line 162, in wrapper
return func(mod, pin, wrapped, instance, args, kwargs)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/ddtrace/contrib/django/patch.py", line 213, in wrapped
return func(*args, **kwargs)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/utils/deprecation.py", line 135, in __call__
response = self.process_request(request)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/ddtrace/contrib/trace_utils.py", line 162, in wrapper
return func(mod, pin, wrapped, instance, args, kwargs)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/ddtrace/contrib/django/patch.py", line 213, in wrapped
return func(*args, **kwargs)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/middleware/locale.py", line 35, in process_request
translation.activate(language)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/utils/translation/__init__.py", line 181, in activate
return _trans.activate(language)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/utils/translation/trans_real.py", line 303, in activate
_active.value = translation(language)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/utils/translation/trans_real.py", line 292, in translation
_translations[language] = DjangoTranslation(language)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/utils/translation/trans_real.py", line 169, in __init__
self._add_installed_apps_translations()
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/utils/translation/trans_real.py", line 225, in _add_installed_apps_translations
translation = self._new_gnu_trans(localedir)
File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/utils/translation/trans_real.py", line 198, in _new_gnu_trans
return gettext_module.translation(
File "/usr/local/lib/python3.9/gettext.py", line 602, in translation
t = _translations.setdefault(key, class_(fp))
File "/usr/local/lib/python3.9/gettext.py", line 261, in __init__
self._parse(fp)
File "/usr/local/lib/python3.9/gettext.py", line 439, in _parse
self.plural = c2py(plural)
File "/usr/local/lib/python3.9/gettext.py", line 183, in c2py
result, nexttok = _parse(_tokenize(plural))
File "/usr/local/lib/python3.9/gettext.py", line 116, in _parse
nexttok = next(tokens)
File "/usr/local/lib/python3.9/gettext.py", line 93, in _tokenize
raise ValueError('invalid token in plural form: %s' % value)
ValueError: invalid token in plural form: EXPRESSION
None of the languages for which this is the case have current HyperKitty translations in Weblate. It will be up to translators to supply proper Plural-Forms: as required.