自定义查询起作用，但返回“未定义的偏移量：0”

我的自定义查询工作正常，除非调试时抛出错误：

未定义的偏移量：0 in/wp includes/query。php

以下是我的查询：

<?php $loop = new wp_query(\'post_type=car&category_name=\'.get_the_title());?>

<?php if( $loop->have_posts() ) : ?>
    <table style="width: 100%">
        <col style="width:35%">
        <col style="width:30%">
        <col style="width:20%">
        <col style="width:15%">
            <thead>
                <tr>
                    <th>Name</th>
                    <th>Style</th>
                    <th>ABC</th>
                    <th>Rating</th>
                </tr>
            </thead>
            <tbody>
                <?php while( $loop->have_posts() ) : $loop->the_post(); ?>
                <tr>
                    <td><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></td>
                    <td><?php $style = get_post_meta( get_the_ID(), \'style\', true); echo $style; ?></td>
                    <td><?php $abc = get_post_meta( get_the_ID(), \'abc\', true); echo $abc; ?></td>
                    <td><?php $rating = get_post_meta( get_the_ID(), \'rating\', true); echo $rating; ?></td>

                </tr>
                <?php endwhile; else: endif; ?>
                </tbody>
                </table>

我查找了未定义的偏移量：0，但我似乎无法找出此处缺少的内容。怎么了？

<?php $pageTitle = get_the_title(); // Query Arguments $args = array ( \'post_type\' => \'car\', \'order\' => \'ASC\', \'meta_query\' => array( array( \'key\' => \'brand_category\', \'value\' => $pageTitle ), ), ); // The Query $query = new WP_Query( $args ); // The Loop if ( $query->have_posts() ) { echo \'<h3>Cars</h3> <table style="width: 100%"> <col style="width:35%"> <col style="width:30%"> <col style="width:20%"> <col style="width:15%"> <thead> <tr> <th>Name</th> <th>Style</th> <th>ABC</th> <th>Rating</th> </tr> </thead> <tbody>\'; while ( $query->have_posts() ) { $query->the_post(); echo \'<tr>\'; echo \'<td>\'; echo \'<a href="\'.get_permalink().\'">\'.get_the_title().\'</a>\'; echo \'</td>\'; echo \'<td>\' . get_post_meta( get_the_ID(), \'style\', true) . \'</td> <td>\' . get_post_meta( get_the_ID(), \'abc\', true) . \'</td> <td>\' . get_post_meta( get_the_ID(), \'rating\', true). \'</td> </tr>\'; } echo \'</tbody> </table>\'; } else { // no posts found } // Restore original Post Data wp_reset_postdata(); ?>

$args = array( \'post_type\' => \'car\', \'posts_per_page\' => -1, \'tax_query\' => array( array( \'taxonomy\' => \'your category/taxonomy name for post type car\', \'terms\' => \'term name/category name\', \'field\' => \'slug\' ) ) ); $query = new WP_Query($args); $results = $query->get_posts(); print_r($results);

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