Why does The Official Treehouse Badges Widget not work? (solved)

class Wptreehouse_Badges_Widget extends WP_Widget {

    function wptreehouse_badges_widget() {
        // Instantiate the parent object
        parent::__construct( false, 'Official Treehouse Badges Widget' );
    }

    function widget( $args, $instance ) {
        // Widget output

        extract ( $args );
        $title = apply_filters ('widget_title', $instance['title']);

        $options = get_option ('wptreehouse_badges');
        $wptreehouse_profile = $options['wptreehouse_profile'];

        require('inc/front-end.php');
    }

    function update( $new_instance, $old_instance ) {
        // Save widget options

        $instance = $old_instance;
        $instance['title'] = strip_tages($new_instance['title']);
        return $instance;
    }

    function form( $instance ) {
        // Output admin widget options form

        $title = esc_attr($instance['title']);

        require('inc/widget-fields.php');

    }
}

function wptreehouse_badges_register_widgets() {
    register_widget( 'Wptreehouse_Badges_Widget' );
}

add_action( 'widgets_init', 'wptreehouse_badges_register_widgets' );