Errors:
Caught exception in MusicBrainz::Server::Controller::Relationship::LinkType->tree_setup "attributes is not a type that has a model at lib/MusicBrainz/Server/Data/Utils.pm line 345."
Caught exception in MusicBrainz::Server::Controller::Relationship::LinkType->edit "Can't call method "id" without a package or object reference at lib/MusicBrainz/Server/Data/LinkType.pm line 88."

Stack trace:
line 87 MusicBrainz::Server::Data::LinkType
line 112 MusicBrainz::Server::Controller::Relationship::LinkType
line 316 MusicBrainz::Server
line 316 MusicBrainz::Server
line 316 MusicBrainz::Server
line 280 MusicBrainz::Server

Request data:
$VAR1 = {
'query_parameters' => {},
'body_parameters' => {}
};

URL: http://musicbrainz.org/relationships/attributes/edit/77a0f1d3-f9ec-4055-a6e7-24d7258c21f7