A Multiplayer API error, sent with HTTP 415. Status: the Multiplayer API is in private alpha; this code is part of its published contract.
When
The body is not application/json.
What to do
Send JSON with the header Content-Type: application/json.
The answer
Every error is a JSON body with a stable error code. Clients act on the codes they know and treat any other code as a failure of its HTTP status, and keep fields they do not know.
{
"error": "unsupported_media_type",
"detail": "A sentence that is safe to show.",
"next": "Send JSON with the header `Content-Type: application/json`.",
"docsUrl": "https://lobbylab.gg/docs/errors/unsupported_media_type"
}See also: every error code, the API reference and the docs.