changelog/10.11.0_2022-08-23/40165
Bugfix: Error responses to add group API requests are inconsistent
Some response error messages were contained in a `data` structure. Others were not.
They have now been made consistent. They are not contained in a `data` structure.
https://github.com/owncloud/core/issues/40164
https://github.com/owncloud/core/pull/40165