https://socialhub.activitypub.rocks/t/understanding-an-error-message/4081/3

"It must be served with a valid ActivityPub media type in the Content-Type header for the object, or else it will be rejected."

Please, die under a camion

...
#ActivityPub

Understanding an Error Message

Yes. https:///actor returns the JSON doc I posted above. I added an outbox property. Same error message.

^SocialHub