https://beta.musicbrainz.org/ws/2/discid/I5l9cCSFccLKFEKS.7wqSZAorPU- works fine
https://beta.musicbrainz.org/ws/2/discid/I5l9cCSFccLKFEKS.7wqSZAorPU-?fmt=json crashes with

Fehler:

Caught exception in MusicBrainz::Server::Controller::WS::2::DiscID->discid "argument is not a module name"

Stack-Trace:
line 43 MusicBrainz::Server::WebService::Serializer::JSON::2::Utils
line 52 MusicBrainz::Server::WebService::Serializer::JSON::2::Utils
line 24 MusicBrainz::Server::WebService::JSONSerializer
line 66 MusicBrainz::Server::Controller::WS::2::DiscID
line 311 MusicBrainz::Server
line 311 MusicBrainz::Server
line 311 MusicBrainz::Server
line 270 MusicBrainz::Server
line 366 MusicBrainz::Server
line 277 MusicBrainz::Server

Anfragedaten:
$VAR1 = {
'query_parameters' =>

Unknown macro: { 'fmt' => 'json' }

,
'body_parameters' => {}
};

Oberflächensprache: de

URL: https://beta.musicbrainz.org/ws/2/discid/I5l9cCSFccLKFEKS.7wqSZAorPU-?fmt=json