WordPress database error: [Illegal mix of collations (latin2_general_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation 'like']
SELECT SQL_CALC_FOUND_ROWS wp_posts.* FROM wp_posts WHERE 1=1 AND (((post_title LIKE '%sklep%') OR (post_content LIKE '%sklep%')) AND ((post_title LIKE '%jeździecki%') OR (post_content LIKE '%jeździecki%')) OR (post_title LIKE '%sklep jeździecki%') OR (post_content LIKE '%sklep jeździecki%')) AND (post_type = 'post' AND (post_status = 'publish')) ORDER BY post_date DESC LIMIT 0, 15