Fatal error: Uncaught Error: Call to undefined method widget_categorys::init() in /var/www/html/wp-content/plugins/widget-kategorieartikel/widget-kategorieartikel.php:208
Stack trace:
#0 /var/www/html/wp-includes/class-wp-hook.php(324): add_action_widgets_init('')
#1 /var/www/html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#2 /var/www/html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#3 /var/www/html/wp-includes/widgets.php(1862): do_action('widgets_init')
#4 /var/www/html/wp-includes/class-wp-hook.php(324): wp_widgets_init('')
#5 /var/www/html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#6 /var/www/html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#7 /var/www/html/wp-settings.php(695): do_action('init')
#8 /var/www/html/wp-config.php(98): require_once('/var/www/html/w...')
#9 /var/www/html/wp-load.php(50): require_once('/var/www/html/w...')
#10 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...')
#11 /var/www/html/index.php(17): require('/var/www/html/w...')
#12 {main}
  thrown in /var/www/html/wp-content/plugins/widget-kategorieartikel/widget-kategorieartikel.php on line 208