Seeding users return error

When I am trying to seed my users collection/table I get the following error message:

[ErrorException]                                                                                                                                 
Argument 2 passed to Illuminate\Database\Query\Builder::__construct() must be an instance of Illuminate\Database\Query\Grammars\Grammar, null given, called in /home/frpa/pmj/bootstrap/compiled.php on line 6965 and defined

Now I read in your mongodb driver about this error, but I did not define a custom user model.

My auth.php config for the models looks like this:

'model' => array(
    'groups' => array(
        'model' => 'Jenssegers\Mongodb\Sentry\Group',
    ),
    'users' => array(
        'model' => 'Jenssegers\Mongodb\Sentry\User',
    ),
    'throttling' => array(
        'model' => 'Jenssegers\Mongodb\Sentry\Throttle',
    ),
),

as driver setting in auth.php I tried: database, eloquent and moloquent (which I aliased in app.php) but all produce the same error. Since I did not define a User Model, there should not be the inheritance problem or do I have to define a custom user model in order for this to work?

My seed file looks like this:

<?php

class SentrySeeder extends Seeder {

public function run () {

    echo "Seeding Users ...";

    // Empty all user related tables
    DB::table('users')->delete();
    DB::table('groups')->delete();
    DB::table('users_groups')->delete();

    // Create a new user
    Sentry::getUserProvider()->create(array(
        'email'       => 'patrick@dvinci.de',
        'password'    => "password",
        'first_name'  => 'Patrick',
        'last_name'   => 'Fraley',
        'activated'   => 1,
    ));

    // Create an admin group
    Sentry::getGroupProvider()->create(array(
        'name'        => 'Admin',
        'permissions' => array('admin' => 1),
    ));

    // Assign user permissions
    $adminUser  = Sentry::getUserProvider()->findByLogin('patrick.fraley@dvinci.de');
    $adminGroup = Sentry::getGroupProvider()->findByName('Admin');
    $adminUser->addGroup($adminGroup);

    echo "Seeded.";
}

}

jenssegers / laravel-mongodb-sentry

Seeding users return error #5