php – AJAX returning clean end result

I am utilizing ajax to filter a listing. The filter works because it ought to more often than not, however for some queries it returns a clean end result. When this occurs, the error within the console is:

PHP Errors in Ajax Response

from a file known as query-monitor.js.

Filter JS:

jQuery(operate($){
    const search = $('#search');

    search.submit(operate(e){
        e.preventDefault();
        update_results($(this));
    });
});

operate update_results (filter) {
    $.ajax({
        url:filter.attr('motion'),
        knowledge:filter.serialize(), // type knowledge
        kind:filter.attr('technique'), // POST
        success:operate(knowledge){
            $('#models-container').html(knowledge); // insert knowledge
        }
    });
    return false;
}

The update_results operate populates the factor #models-container with the outcomes. The merchandise I am describing as “clean” has all of the html, however not one of the knowledge.

archive-models.php

<!-- Fashions search bar -->
<type id="search" class="model-search" technique="POST" motion="<?php echo admin_url('admin-ajax.php') ?>">
    <p class="model-search-headline">
        Search For Fashions
    </p>
    <enter kind="textual content" identify="modelsearch" placeholder="Kind right here...">
    <enter kind="hidden" identify="motion" worth="modelfilter">
    <enter kind="submit" worth="">
</type>
<!-- Finish fashions search bar -->
<div id="models-container">
<?php whereas (have_posts()) : the_post(); ?>
    <?php
        $is_new = get_field('is_new');
        $title  = get_the_title();
        $copy   = get_field('preview_text');
        $picture  = get_field('picture');
        $phrases  = get_the_terms($publish, 'model-tag');
    ?>
    <div class="model-card<?php echo $is_new ? ' new' : '' ?>">
        <?php if ($picture) : ?>
            <img class="model-card-image" src="<?php echo $picture['url'] ?>" alt="<?php echo $picture['alt'] ?>">
        <?php endif; ?>
        <div class="copy-area">
            <?php if ($phrases || $is_new) : ?>
                <div class="model-card-terms">
                    <?php if ($is_new) : ?>
                        <p class="model-card-term new">New!</p>
                    <?php endif; ?>
                    <?php foreach ($phrases as $time period) : ?>
                        <p class="model-card-term"><?php echo $term->identify ?></p>
                    <?php endforeach; ?>
                </div>
            <?php endif; ?>
            <h2 class="model-card-title"><?php echo $title ?></h2>
            <?php if ($copy) : ?>
                <p class="model-card-copy"><?php echo $copy ?></p>
            <?php endif; ?>
        </div>
    </div>
<?php endwhile; ?>
</div>

Let me know if I am lacking necessary data in my query. If there’s a great way to troubleshoot this, please present it within the feedback!