# Django 4.0.8.dev20220803071047 - dokumentacja

# Django 3.0.8 release notes

July 1, 2020

Django 3.0.8 fixes several bugs in 3.0.7.

## Poprawki błędów

- Fixed messages of `InvalidCacheKey` exceptions and `CacheKeyWarning` warnings raised by cache key validation (#31654).
- Fixed a regression in Django 3.0.7 that caused a queryset crash when grouping by a many-to-one relationship (#31660).
- Reallowed, following a regression in Django 3.0, non-expressions having a `filterable` attribute to be used as the right-hand side in queryset filters (#31664).
- Fixed a regression in Django 3.0.2 that caused a migration crash on PostgreSQL when adding a foreign key to a model with a namespaced `db_table` (#31735).
- Added compatibility for `cx_Oracle` 8 (#31751).