Fatal error: Uncaught Error: Class 'leform_widget' not found
in /home/enteri5/public_html/wp-includes/class-wp-widget-factory.php on line 62

Call stack:

1. WP_Widget_Factory::register()
   wp-includes/widgets.php:115
2. register_widget()
   wp-content/plugins/halfdata-green-forms/green-forms.php:3410
3. leform_class::widgets_init()
   wp-includes/class-wp-hook.php:324
4. WP_Hook::apply_filters()
   wp-includes/class-wp-hook.php:348
5. WP_Hook::do_action()
   wp-includes/plugin.php:517
6. do_action()
   wp-includes/widgets.php:1862
7. wp_widgets_init()
   wp-includes/class-wp-hook.php:324
8. WP_Hook::apply_filters()
   wp-includes/class-wp-hook.php:348
9. WP_Hook::do_action()
   wp-includes/plugin.php:517
10. do_action()
    wp-settings.php:695
11. require_once()
    wp-config.php:93
12. require_once()
    wp-load.php:50
13. require_once()
    wp-blog-header.php:13
14. require()
    index.php:17