Django 3.0.3 release notes

    Bugfixes

    • Fixed a regression in Django 3.0 where and values_list() crashed if a queryset contained an aggregation and Exists() annotation ().
    • Relaxed the system check added in Django 3.0 to reallow use of a sublanguage in the LANGUAGE_CODE setting, when a base language is available in Django but the sublanguage is not ().
    • Fixed a system check to ensure the max_length attribute fits the longest choice, when a named group contains only non-string values (#31155).
    • Fixed a regression in Django 2.2 that caused a crash of and StringAgg with filter argument when used in a Subquery ().
    • Fixed a regression in Django 3.0 that caused a crash of QuerySet.prefetch_related() for GenericForeignKey with a custom ContentType foreign key (#31190).