我创建了一个短代码，允许我传递这样的属性[product_swatch swatchtype="swatch"]. 它在前端工作正常，但每次我更新页面时都会导致500个错误。如果未传递任何属性或属性未返回任何内容，则按照正常方式更新页面。

我很困惑，因为WP\\u DEBUG也没有显示任何内容。

以下是相关功能：

function product_swatch_shortcode($atts)
{
    $swatch_shortcode_atts = extract( shortcode_atts( array(
        \'swatchtype\' => \'\',
    ), $atts));

    $swatch_args = array (
        \'post_type\'      => \'swatch\',
        \'posts_per_page\' => -1,
        \'tax_query\'      => array(
            array(
                \'taxonomy\' => \'swatch-type\',
                \'field\'    => \'slug\',
                \'terms\'    => $swatchtype,
            ),
        ),
    );

    // The Query
    $swatch_query = new WP_Query( $swatch_args );

    // The Loop
    if ( $swatch_query->have_posts() ) {
        while ( $swatch_query->have_posts() ) {

            $swatch_query->the_post();

            $swatch_name = get_the_title();
            $swatch_image_small = get_the_post_thumbnail_url( \'\', \'medium\' );
            $swatch_image_big = get_the_post_thumbnail_url( \'\', \'full\' );
            $interactive_designer_link = types_render_field( \'swatch-interactive-designer-link\', array(\'output\' => \'raw\') );
            $preview_image = types_render_field( \'swatch-preview-image\', array(\'output\' => \'raw\') );
            $swatch_id = strtolower( preg_replace(\'/\\s+/\', \'\', get_the_title()) );

            $output  = \'<a href="javascript:;" data-fancybox data-src="#\' . $swatch_id . \'" class="swatch"><img src="\' . $swatch_image_small . \'">\' . $swatch_name . \'</a>\';
            $output .= \'<div id="\' . $swatch_id . \'" class="lightbox swatch-details">\';
            $output .= \'<div class="swatch-col1"><h5>\' . $swatch_name . \'</h5><img src="\' . $swatch_image_big . \'">\';
            $output .= \'<a href="\' . $interactive_designer_link . \'" class="btn" style="margin:30px 0;">VIEW PRODUCT IN SIMULATION</a></div>\';
            $output .= \'<div class="swatch-col2"><img src="\' . $preview_image . \'"></div></div>\';

            echo $output;

        }
    } else {
        // no posts found
    }
    /* Restore original Post Data */
    wp_reset_postdata();
}