When you try to query to the CD stub database when using beta.musicbrainz.org it will return this error:

Internal Server Error

Oops, something went wrong!

Error:
Can't use an undefined value as an ARRAY reference at lib/MusicBrainz/Server/Entity/CDStub.pm line 134. at lib/MusicBrainz/Server/Entity/CDStub.pm line 134 MusicBrainz::Server::Entity::CDStub::TO_JSON called at lib/MusicBrainz/Server/Entity/Util/JSON.pm line 43 MusicBrainz::Server::Entity::Util::JSON::to_json_object called at lib/MusicBrainz/Server/Entity/SearchResult.pm line 51 MusicBrainz::Server::Entity::SearchResult::TO_JSON called at lib/MusicBrainz/Server/Entity/Util/JSON.pm line 43 MusicBrainz::Server::Entity::Util::JSON::to_json_object called at lib/MusicBrainz/Server/Entity/Util/JSON.pm line 22 MusicBrainz::Server::Entity::Util::JSON::to_json_array called at lib/MusicBrainz/Server/Controller/Search.pm line 76 Catalyst::dispatch called at lib/MusicBrainz/Server.pm line 388 MusicBrainz::Server::_ANON_ at lib/MusicBrainz/Server.pm line 353 MusicBrainz::Server::with_translations(?, ?) called at lib/MusicBrainz/Server.pm line 389 Class::MOP::Method::Wrapped::_ANON called at lib/MusicBrainz/Server.pm line 403 Class::MOP::Method::Wrapped::ANON_ called at lib/MusicBrainz/Server.pm line 488
 

Time: 2022-10-16T11:01:59.090Z

Host: cbf640132706

Interface language: en

URL: https://beta.musicbrainz.org/search?query=brendan+quinn&type=cdstub&method=indexed

Request data:
{ "body_parameters": {}, "query_parameters": { "method": "indexed", "query": "brendan quinn", "type": "cdstub" } }
 

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