add fix problem

blocks/mainnews.php

@@ -0,0 +1,35 @@
+<?php
+
+$params = array(
+	'posts_per_page' => -1, // нужно для отображения всех постов, без разделения по страницам
+	'post__in'  => get_option( 'sticky_posts' ),
+    'posts_per_page' => 1
+);
+ 
+$q = new WP_Query( $params );
+ 
+if ( $q->have_posts() ) : 
+    $q->the_post();
+    $mainpost_id = get_the_ID();
+?>
+
+<div class="main-card">
+        
+<?if ( has_post_thumbnail() ) :?> 
+    <div class="card-img-top">   
+        <a href="<?the_permalink();?>"><img src="<?php echo get_the_post_thumbnail_url(null, 'full'); ?>" alt="<?the_title();?>"></a>
+    </div>
+<?endif?>
+
+<h2 class="main-card-title"><a href="<?the_permalink();?>"><?the_title();?></a></h2>
+<div class="main-card-body">
+    <div class="main-card-text"><a href="<?the_permalink();?>"><?the_excerpt();?></a></div>
+    <div class="news_date"><?the_time('j F Y, G:i');?></div>
+</div>
+
+</div>
+
+
+
+
+<?php endif; wp_reset_postdata();