Error:

Caught exception in MusicBrainz::Server::Controller::ReleaseEditor::Add->add "Can't use an undefined value as a HASH reference at /home/musicbrainz/musicbrainz-server/script/../lib/MusicBrainz/Server/Wizard.pm line 257."

Stack trace:

line 257 MusicBrainz::Server::Wizard
line 782 MusicBrainz::Server::Wizard::ReleaseEditor
line 83 MusicBrainz::Server::Wizard::ReleaseEditor
line 168 MusicBrainz::Server::Wizard
line 388 MusicBrainz::Server::Wizard
line 132 MusicBrainz::Server::Wizard
line 92 MusicBrainz::Server::Wizard::ReleaseEditor
line 23 MusicBrainz::Server::Controller::ReleaseEditor::Add
line 270 MusicBrainz::Server

Request data:

$VAR1 = {
'query_parameters' =>

{ 'artist' => '92d29f07-30c7-46a3-9a88-76691de92c66' }

,
'body_parameters' => {
'wizard_page_id' => '4',
'next' => "Next \x

{bb}

",
'missing.label.0.for' => 'Clap Your Hands',
'missing.label.0.sort_name' => 'Clap Your Hands',
'missing.label.0.comment' => 'German house label',
'missing.label.0.name' => 'Clap Your Hands',
'wizard_session_id' => '0.824605081297609'
}
};

URL: http://musicbrainz.org/release/add?artist=92d29f07-30c7-46a3-9a88-76691de92c66