last.fm-ripper: Undefined argument in option spec

I couldn't get last.fm-ripper to work, it kept giving the error "Undefined argument in option spec". I commented out a bunch of stuff then it worked again, watevar! Here are the random changes I made:

GetOptions(
#'help|?' => \$help,
#             'debug|d' => \$debug,
#             'no_covers|n' => $no_covers,
             'artist|a=s' => \$artist,
             'username|u=s' => \$username,
             'password|p=s' => \$password,
             'output_dir|o=s' => \$output_directory#,
#'aws_token|w=s' => \$aws_token
             );

I don't know perl I don't want to know perl.