WordPress database error Illegal mix of collations (utf8_general_ci,IMPLICIT)
Hi, I am getting below error log in the server from last couple of days. Kindly help why i am getting this error ?
[04-Sep-2019 17:38:56 UTC] WordPress database error Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8mb4_unicode_520_ci,COERCIBLE) for operation 'like' for query SELECT SQL_CALC_FOUND_ROWS wp_posts.ID FROM wp_posts WHERE 1=1 AND (((wp_posts.post_content_filtered LIKE '%হুমীীীজীবনেৃৃশেষসবচেয়েঊূূূাঊূূীূীূূূূীঊসূূূীূূূূ ূূূূূঊঊঊীীূীূঊঊঊঊ😁😁😁😁😁😎🥴😝😝😝👨*❤️*👨👨*❤️*👨%'))) AND (wp_posts.post_status = 'publish') AND (wp_posts.post_type IN ('ad_listing','post')) GROUP BY wp_posts.ID ORDER BY wp_posts.post_title LIKE '%হুমীীীজীবনেৃৃশেষসবচেয়েঊূূূাঊূূীূীূূূূীঊসূূূীূূূূ ূূূূূঊঊঊীীূীূঊঊঊঊ😁😁😁😁😁😎🥴😝😝😝👨*❤️*👨👨*❤️*👨%' DESC, wp_posts.post_date DESC LIMIT 0, 40 made by require('
wp-blog-header.php'),
wp,
WP->main,
WP->query_posts, WP_Query->query, WP_Query->get_posts
My
WP version: Version 5.2.2
ClassiPress v3.6.3
PHP version: 7.2.18