It looks like it is set to nil by default except for "API-only" apps where it is set to :api. When set to :api it renders errors in the requested content type. The default behavior is to always render as HTML. For now, I think the correct solution is to call it out in our docs.
wagenet
commented
5 years ago
It looks like it is set to
nilby default except for "API-only" apps where it is set to:api. When set to:apiit renders errors in the requested content type. The default behavior is to always render as HTML. For now, I think the correct solution is to call it out in our docs.