Internal Server Error

Oops, something went wrong!

Error:

Caught exception in MusicBrainz::Server::Controller::Collection->create "Can't call method "entity_type" on an undefined value at lib/MusicBrainz/Server/Controller/Collection.pm line 228,  line 184."

Stack trace:

    line 227 MusicBrainz::Server::Controller::Collection
    line 346 MusicBrainz::Server
    line 320 MusicBrainz::Server
    line 347 MusicBrainz::Server
    line 361 MusicBrainz::Server
    line 393 MusicBrainz::Server

Time: 2016-05-04 19:47:08 UTC

Host: pingu

Interface language: en

URL: https://musicbrainz.org/collection/create?series=4501

Request data:

$VAR1 = {
          'query_parameters' => {
                                  'series' => '4501'
                                },
          'body_parameters' => {
                                 'edit-list.name' => 'Encore Series Genesis',
                                 'edit-list.type_id' => '1',
                                 'edit-list.description' => ''
                               }
        };