我有一个关于Visual Compser后端不显示任何元素的问题，它只显示经典模式编辑器中的代码。
See Screenshot
警告：preg_match_all（）：编译失败：第162行上字符类中偏移量11处的范围无效，该字符类位于/home/customer/www/*****.com/public_html/wp-content/plugins/js_composer/include/autoload/hook-vc-grid.php中
"这是第162行"
preg_match_all( "/$pattern/", $post->post_content, $found ); // fetch only needed shortcodes

```public function gridSavePostSettingsId( array $settings, $post_id, $post ) {
    $pattern = $this->getShortcodeRegexForId();
    preg_match_all( "/$pattern/", $post->post_content, $found ); // fetch only needed shortcodes
    $settings['vc_grid_id'] = array();
    if ( is_array( $found ) && ! empty( $found[0] ) ) {
        $to_save = array();
        if ( isset( $found[1] ) && is_array( $found[1] ) ) {
            foreach ( $found[1] as $key => $parse_able ) {
                if ( empty( $parse_able ) || '[' !== $parse_able ) {
                    $id_pattern = '/' . $this->grid_id_unique_name . '\:([\w-_]+)/';
                    $id_value = $found[4][ $key ];

                    preg_match( $id_pattern, $id_value, $id_matches );

                    if ( ! empty( $id_matches ) ) {
                        $id_to_save = $id_matches[1];

                        // why we need to check if shortcode is parse able?
                        // 1: if it is escaped it must not be displayed (parsed)
                        // 2: so if 1 is true it must not be saved in database meta
                        $shortcode_tag = $found[2][ $key ];
                        $shortcode_atts_string = $found[3][ $key ];
                        /** @var $atts array */
                        $atts = shortcode_parse_atts( $shortcode_atts_string );
                        $content = $found[6][ $key ];
                        $data = array(
                            'tag' => $shortcode_tag,
                            'atts' => $atts,
                            'content' => $content,
                        );

                        $to_save[ $id_to_save ] = $data;
                    }
                }
            }
        }
        if ( ! empty( $to_save ) ) {
            $settings['vc_grid_id'] = array( 'shortcodes' => $to_save );
        }
    }

    return $settings;
}```

我试过禁用所有插件并回滚wordpress版本，但还是一样。这个问题是不是和上面的警告有关？我对编码知之甚少。请给我指出正确的方向。
谢谢你，谢谢你