Fatal error: Uncaught Error: Call to undefined function wp_use_widgets_block_editor() in /home/amet/www/amet/wp-content/plugins/widget-options/includes/widgets/gutenberg/gutenberg-toolbar.php:84 Stack trace: #0 /home/amet/www/amet/wp-content/plugins/widget-options/plugin.php(271): require_once() #1 /home/amet/www/amet/wp-content/plugins/widget-options/plugin.php(60): WP_Widget_Options->setup_widget_block_editor() #2 /home/amet/www/amet/wp-content/plugins/widget-options/plugin.php(295): WP_Widget_Options::instance() #3 /home/amet/www/amet/wp-content/plugins/widget-options/plugin.php(302): WIDGETOPTS() #4 /home/amet/www/amet/wp-settings.php(391): include_once('/home/amet/www/...') #5 /home/amet/www/amet/wp-config.php(93): require_once('/home/amet/www/...') #6 /home/amet/www/amet/wp-load.php(37): require_once('/home/amet/www/...') #7 /home/amet/www/amet/wp-blog-header.php(13): require_once('/home/amet/www/...') #8 /home/amet/www/amet/index.php(17): require('/home/amet/www/...') #9 {main} thrown in /home/amet/www/amet/wp-content/plugins/widget-options/includes/widgets/gutenberg/gutenberg-toolbar.php on line 84