RARY_TAB_GROUP, Source_Local::ADMIN_MENU_SLUG )
		);

		add_submenu_page(
			Source_Local::ADMIN_MENU_SLUG,
			'',
			__( 'Theme Builder', 'elementor-pro' ),
			'publish_posts',
			$this->get_site_editor_url()
		);
	}

	private function register_admin_menu( Admin_Menu_Manager $admin_menu_manager ) {
		$experiments_manager = Plugin::elementor()->experiments;

		// Unique case when the experiments manager is not initialized yet.
		if ( ! $experiments_manager || ! $experiments_manager->is_feature_active( 'theme_builder_v2' ) ) {
			return;
		}

		$admin_menu_manager->unregister( add_query_arg( 'tabs_group', ThemeBuilderModule::ADMIN_LIBRARY_TAB_GROUP, Source_Local::ADMIN_MENU_SLUG ) );

		$admin_menu_manager->register(
			$this->get_site_editor_url(),
			new Theme_Builder_Menu_Item()
		);
	}

	private function add_finder_item( array $categories ) {
		if ( ! Plugin::elementor()->experiments->is_feature_active( 'theme_builder_v2' ) ) {
			return $categories;
		}

		// Replace the old theme builder "create-new" link with the new site-editor.
		$categories['create']['items']['theme-template'] = [
			'title' => __( 'Add New Theme Template', 'elementor-pro' ),
			'icon' => 'plus-circle-o',
			'url' => $this->get_site_editor_url() . '/add-new',
			'keywords' => [ 'template', 'theme', 'new', 'create' ],
		];

		return $categories;
	}

	/**
	 * Module constructor.
	 *
	 * @access public
	 */
	public function __construct() {
		$this->lock = new Feature_Lock( [ 'type' => 'theme-builder' ] );

		Plugin::elementor()->data_manager->register_controller( Controller::class );

		add_action( 'elementor/ajax/register_actions', [ $this, 'register_ajax_actions' ], 11 /* Override core actions */ );
		add_action( 'elementor/frontend/render_mode/register', [ $this, 'register_render_mode' ] );

		add_action( 'elementor/experiments/default-features-registered', function ( ExperimentsManager $manager ) {
			$this->add_default_new_site_editor_experiments( $manager );
		} );

		add_action( 'elementor/admin/menu/register', function ( Admin_Menu_Manager $admin_menu ) {
			$this->register_admin_menu( $admin_menu );
		}, Theme_Builder_Table_View::ADMIN_MENU_PRIORITY + 1 );

		// TODO: BC - Remove after `Admin_Menu_Manager` will be the standard.
		add_action( 'admin_menu', function () {
			if ( did_action( 'elementor/admin/menu/register' ) ) {
				return;
			}

			$this->register_site_editor_menu();
		}, 23 /* After old theme builder */ );

		add_filter( 'elementor/finder/categories', function ( array $categories ) {
			return $this->add_finder_item( $categories );
		}, 11 /* After old theme builder */ );

	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'ElementorPro\Core\App\Modules\SiteEditor\Module' not found in /home/sportuga/public_html/wp-content/plugins/pro-elements/core/app/app.php:86
Stack trace:
#0 /home/sportuga/public_html/wp-content/plugins/pro-elements/plugin.php(483): ElementorPro\Core\App\App-&gt;__construct()
#1 /home/sportuga/public_html/wp-content/plugins/pro-elements/plugin.php(134): ElementorPro\Plugin-&gt;__construct()
#2 /home/sportuga/public_html/wp-content/plugins/pro-elements/plugin.php(552): ElementorPro\Plugin::instance()
#3 /home/sportuga/public_html/wp-content/plugins/pro-elements/pro-elements.php(75): require('/home/sportuga/...')
#4 /home/sportuga/public_html/wp-includes/class-wp-hook.php(324): pro_elements_load_plugin_func('')
#5 /home/sportuga/public_html/wp-includes/class-wp-hook.php(348): WP_Hook-&gt;apply_filters(NULL, Array)
#6 /home/sportuga/public_html/wp-includes/plugin.php(517): WP_Hook-&gt;do_action(Array)
#7 /home/sportuga/public_html/wp-settings.php(550): do_action('plugins_loaded')
#8 /home/sportuga/pub in <b>/home/sportuga/public_html/wp-content/plugins/pro-elements/core/app/app.php</b> on line <b>86</b><br />