I'm creating a site with Dancer2 and adding authentication. I've created a simple form page to create user accounts but am getting an error when I try to call the create_user function:

post '/adduser' => sub {
    create_user username=>param{'Username'};
    user_password username => param{'Username'}, password => param{'Pa
+ssword'};                                      
};
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This results in a 500 error:

Can't locate object method "create_user" via package "Dancer2::Plugin::Auth::Extensible::Provider::Database" at /usr/local/share/perl/5.14.2/Dancer2/Plugin/Auth/Extensible.pm line 696.

This simple test page:

get '/admin' => require_role admin => sub
{
    return 'You found the admin page!';
};
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opens up the built-in "Login Required" page, so the auth module is installed and functioning.

Looking at the Extensible module, the code that errors out is:

my $user = $provider->create_user(%options);

So it looks to me as if the provider module should implement the function, and that seems to be back up by the error message. But checking the modules,none of them do:

Provider# ls
Base.pm  Config.pm  Database.pm  Example.pm  Unix.pm

Provider# grep create_user *

Provider# grep sub *
Base.pm:sub new {
Base.pm:sub realm_settings { shift->{realm_settings} || {} }
Base.pm:sub realm_dsl { shift->{dsl} }
Base.pm:sub match_password {
Base.pm:sub encrypt_password {
Base.pm:        *$method = sub {
Config.pm:sub authenticate_user {
Config.pm:sub get_user_details {
Config.pm:sub get_user_roles {
Database.pm:sub authenticate_user {
Database.pm:sub get_user_details {
Database.pm:sub get_user_roles {
Example.pm:sub users {
Example.pm:sub authenticate_user {
Example.pm:sub get_user_details {
Example.pm:sub get_user_roles {
Unix.pm:sub authenticate_user {
Unix.pm:sub get_user_details {
Unix.pm:sub get_user_roles {
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Any help greatly appreciated.