Problem with displaying wooccomerce related products - wordpress

Question

Bello my singleproduct.php, but my related products not shown on all categories, some work and some no, it is depend on query and fonts. For example here is work https://avestone.ru/product-category/nashi-raboti/, but if I change name of category it will not work. And it does not work at all at any russian named category.
<?php
/**
* The Template for displaying all single products
*
* This template can be overridden by copying it to yourtheme/woocommerce/single-product.php.
*
* HOWEVER, on occasion WooCommerce will need to update template files and you
* (the theme developer) will need to copy the new files to your theme to
* maintain compatibility. We try to do this as little as possible, but it does
* happen. When this occurs the version of the template file will be bumped and
* the readme will list any important changes.
*
* #see https://docs.woocommerce.com/document/template-structure/
* #package WooCommerce\Templates
* #version 1.6.4
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
get_header(); ?>
<div class="popup_form" id="popup_form_product">
<div class="popup_form_content" id="popup_form_content_product">
<a href="javascript:PopUpHide()" class="popup_close">
<svg width="22" height="22" viewBox="0 0 22 22" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M17.1875 4.8125L4.8125 17.1875" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M17.1875 17.1875L4.8125 4.8125" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
</a>
<div class="form_title">Заказать расчет</div>
<?php echo do_shortcode( '[contact-form-7 id="6241" title="Попап товары"]' ); ?>
</div>
</div>
<?php
/**
* woocommerce_before_main_content hook.
*
* #hooked woocommerce_output_content_wrapper - 10 (outputs opening divs for the content)
* #hooked woocommerce_breadcrumb - 20
*/
do_action( 'woocommerce_before_main_content' );
?>
<div id="product-<?php the_ID(); ?>" <?php wc_product_class( '', $product ); ?>>
<div class="product_content">
<div class="breadcrumb">
<?php $values = get_the_terms( $product->id, 'pa_brend'); ?>
<ul>
<li>Каталог</li>
<li> - </li>
<li>
<?php foreach ( $values as $value ) {
echo '' . $value->name .'';
} ?></li>
<li> - </li>
<li><?php the_title(); ?></li>
</ul>
</div>
<?php the_title( '<h1 class="product_title mobile-product_title">', '</h1>' ); ?>
<?php while ( have_posts() ) : ?>
<?php the_post(); ?>
<div class="product_top_content">
<div class="product_top_content_block">
<div class="product_img">
<?php
$columns = apply_filters( 'woocommerce_product_thumbnails_columns', 4 );
$post_thumbnail_id = $product->get_image_id();
$wrapper_classes = apply_filters(
'woocommerce_single_product_image_gallery_classes',
array(
'woocommerce-product-gallery',
'woocommerce-product-gallery--' . ( $post_thumbnail_id ? 'with-images' : 'without-images' ),
'woocommerce-product-gallery--columns-' . absint( $columns ),
'images',
)
);
?>
<div class="<?php echo esc_attr( implode( ' ', array_map( 'sanitize_html_class', $wrapper_classes ) ) ); ?>" data-columns="<?php echo esc_attr( $columns ); ?>" style="opacity: 0; transition: opacity .25s ease-in-out;">
<figure class="woocommerce-product-gallery__wrapper">
<?php
if ( $post_thumbnail_id ) {
$html = wc_get_gallery_image_html( $post_thumbnail_id, true );
} else {
$html = '<div class="woocommerce-product-gallery__image--placeholder">';
$html .= sprintf( '<img src="%s" alt="%s" class="wp-post-image" />', esc_url( wc_placeholder_img_src( 'woocommerce_single' ) ), esc_html__( 'Awaiting product image', 'woocommerce' ) );
$html .= '</div>';
}
echo apply_filters( 'woocommerce_single_product_image_thumbnail_html', $html, $post_thumbnail_id ); // phpcs:disable WordPress.XSS.EscapeOutput.OutputNotEscaped
do_action( 'woocommerce_product_thumbnails' );
?>
</figure>
</div>
</div>
</div>
<div class="product_top_content_block product_top_content_block_right">
<?php the_title( '<h1 class="product_title">', '</h1>' ); ?>
<ul class="product_atr">
<li>Категория: <?php $cats_arr = wc_get_product_category_list( $product->get_id()); $cat_arr = explode(",", $cats_arr); echo $cat_arr[0];?></li>
<?php echo $product->list_attributes(); ?>
<li><?php esc_html_e( 'SKU:', 'woocommerce' ); ?> <span><?php echo $product->get_sku(); ?><span></li>
</ul>
<?php if( $product->get_price_html()) { ?>
<div class="product_price">
<p class="<?php echo esc_attr( apply_filters( 'woocommerce_product_price_class', 'price' ) ); ?>"><span><?php echo $product->get_price_html(); ?></span> РУБ / м2</p>
<div class="single_product_text">Cтоимость за квадратный метр материала, без учета стоимости изготовления, доставки и монтажа изделия</div>
</div>
<?php } ?>
<form class="product_price_cart cart" action="<?php echo esc_url( apply_filters( 'woocommerce_add_to_cart_form_action', $product->get_permalink() ) ); ?>" method="post" enctype='multipart/form-data'>
<?php do_action( 'woocommerce_before_add_to_cart_button' ); ?>
<div class="single_product_btn">
Расчитать стоимость
</div>
</form>
</div>
</div>
<?php $the_content = apply_filters( 'the_content', get_the_content() ); ?>
<div class="product_text_container">
<div class="product_text_tabs">
<?php if ( ! empty( $the_content ) ) : ?>
<div class="product_text_tab_title tab_1 active">Описание</div>
<?php endif; ?>
<?php if( have_rows('reviews') ): ?>
<div class="product_text_tab_title tab_2 <?php if ( empty( $the_content ) ) echo 'active'; ?>">Отзывы <span class="count"></span></div>
<?php endif; ?>
</div>
<div class="product_text_tabs_content">
<div class="product_text text_tab_1 active">
<?php the_content(); ?>
</div>
<div class="product_text text_tab_2 <?php if ( empty( $the_content ) ) echo 'active'; ?>">
<div class="product_text_review_container">
<?php
$count=1;
if( have_rows('reviews') ):
while ( have_rows('reviews') ) : the_row(); ?>
<div class="product_review_block">
<div class="product_review_block_left">
<?php if( get_sub_field('doc') ): ?>
<div class="product_review_title"><?php the_sub_field('doc'); ?></div>
<?php endif; ?>
<ul class="product_review_list">
<?php if( get_sub_field('client') ): ?>
<li>Заказчик: <?php the_sub_field('client'); ?></li>
<?php endif; ?>
<?php if( get_sub_field('adress') ): ?>
<li>Адрес: <?php the_sub_field('adress'); ?></li>
<?php endif; ?>
<?php if( get_sub_field('stone') ): ?>
<li>Камень: <?php the_sub_field('stone'); ?></li>
<?php endif; ?>
<?php if( get_sub_field('price') ): ?>
<li>Стоимость: <?php the_sub_field('price'); ?></li>
<?php endif; ?>
</ul>
<div class="product_review_text product_review_text-<? echo $count?>">
<?php if( get_sub_field('text') ): ?>
<div class="product_review_text_title">Текст:</div>
<p><?php the_sub_field('text'); ?></p>
Показать весть текст
<?php endif; ?>
</div>
</div>
<div class="product_review_block_right">
<?php if( have_rows('gallery') ): ?>
<div class="slider-review-for">
<?php while( have_rows('gallery') ): the_row();?>
<div class="slider-review-for-box"><img src="<?php echo get_sub_field('img'); ?>" alt="<?php echo $image['alt']; ?>"></div>
<?php endwhile; ?>
</div>
<div class="slider-review-nav">
<?php while( have_rows('gallery') ): the_row();?>
<div class="slider-review-nav-box"><img src="<?php echo get_sub_field('img'); ?>" alt="<?php echo $image['alt']; ?>"></div>
<?php endwhile; ?>
</div>
<?php endif; ?>
</div>
</div>
<?php
$count++;
endwhile;
endif;
?>
<div class="product_text_review_container_btn">Показать все отзывы</div>
</div>
</div>
</div>
</div>
<?php endwhile; // end of the loop. ?>
<?php
$cats_arr = wc_get_product_category_list( $product->get_id()); $cat_arr = explode(",", $cats_arr); $cat = $cat_arr[0]; $mycat = preg_replace('#<a.*?>|</a>#sui', '', $cat);
$id5 = get_the_ID();
$args = array(
'post_type' => 'product',
'post_status' => 'publish',
'posts_per_page' => 4,
'orderby' => 'rand',
'post__not_in' => array($id5),
'tax_query' => array(
array(
'taxonomy' => 'product_cat',
'terms' => $mycat,
'field' => 'slug',
),
)
);
$loop = new WP_Query($args);
if ($loop->have_posts())
{ ?>
<div class="relative_products">
<h2>Похожие камни:</h2>
<div class="relative_products_container">
<div class="woocommerce columns-4 ">
<ul class="products oceanwp-row clr grid">
<?php
while ($loop->have_posts()):
$loop->the_post(); ?>
<li class="entry has-media col span_1_of_4 owp-content-left owp-thumbs-layout-horizontal owp-btn-normal owp-tabs-layout-horizontal product type-product post-5856 status-publish first instock product_cat-classical product_cat-95 has-post-thumbnail shipping-taxable purchasable product-type-simple">
<div class="product-inner clr">
<div class="woo-entry-image clr">
<?php if (has_post_thumbnail()): ?>
<img src="<?php the_post_thumbnail_url('large'); ?>" alt="<?php the_title(); ?>">
<?php endif; ?>
</div><!-- .woo-entry-image -->
<ul class="woo-entry-inner clr">
<li class="image-wrap">
<div class="woo-entry-image clr">
<?php if (has_post_thumbnail()): ?>
<img src="<?php the_post_thumbnail_url('large'); ?>" alt="<?php the_title(); ?>">
<?php endif; ?>
</div><!-- .woo-entry-image -->
</li>
<li class="title"><?php the_title(); ?></li>
<li class="category">Категория <?php $cats_arr = wc_get_product_category_list( $product->get_id()); $cat_arr = explode(",", $cats_arr); echo $cat_arr[0];?></li>
</ul>
</div>
</li>
<?php
endwhile; ?>
</ul>
</div>
</div>
</div>
<?php } ?>
<?php
/**
* woocommerce_after_main_content hook.
*
* #hooked woocommerce_output_content_wrapper_end - 10 (outputs closing divs for the content)
*/
do_action( 'woocommerce_after_main_content' );
?>
<?php
get_footer();
/* Omit closing PHP tag at the end of PHP files to avoid "headers already sent" issues. */
I tried several solutions, tried to make it work via plugin, nothing help.