mod_http_oauth2: Relax payload content type checking in revocation The code expected Content-Type: application/x-www-form-urlencoded HTTPie sent Content-Type: application/x-www-form-urlencoded; charset=utf-8 It did not work

This module discards typing notifications sent to a bare host JID,
preventing error replies to be sent. These errors are harmless but can
be annoying sometimes if your client shows them prominently.