Explain Page Builder how to load your widgets

functions.php

function manually_load_widgets() {
    $widgets_folder = dirname( __FILE__ ) . '/widgets/';
    $contents       = scandir( $widgets_folder );

    foreach( $contents as $item ) {
        if ( '.' === $item || '..' === $item || !is_dir( $widgets_folder . $item ) ) {
            continue;
        }

        foreach ( glob( $widgets_folder . $item . '/*.php' ) as $file ) {
            $file_data = get_file_data(
                $file,
                array(
                    'Widget Name' => 'Widget Name',
                    'Description' => 'Description',
                    'Author'      => 'Author',
                    'Author URI'  => 'Author URI',
                    'Widget URI'  => 'Widget URI',
                    'Video URI'   => 'Video URI',
                )
            );
            
            if ( isset( $file_data[ 'Widget Name' ] ) && ! empty( $file_data[ 'Widget Name' ] ) ) {
                require_once $file;
            }
        }
    }
}
    
add_action( 'after_setup_theme', array( $this, 'manually_load_widgets' ), 11 );