changelog/10.4.1_2020-03-30/37173
Change: Proper error handling on preview endpoint
Preview requests for folders now return 400/Bad Request and any false parameters
of the preview generation now return 400/Bad Request as well.
https://github.com/owncloud/core/pull/37173
https://github.com/owncloud/core/issues/37164
https://github.com/owncloud/core/issues/37165