I have been this error after I update posts since I upgraded to the newest version of wordpress. the posts get update. I just get this error after clicking the save buttom
WordPress database error: [Table 'db178988076.wp_post2cat' doesn't exist]
SELECT cat_ID AS ID, MAX(post_modified) AS last_mod FROM wp_posts p LEFT JOIN wp_post2cat pc ON p.ID = pc.post_id LEFT JOIN wp_categories c ON pc.category_id = c.cat_ID WHERE post_status = 'publish' GROUP BY cat_ID
WordPress database error: [Table 'db178988076.wp_post2cat' doesn't exist]
SELECT cat_ID AS ID, MAX(post_modified) AS last_mod FROM wp_posts p LEFT JOIN wp_post2cat pc ON p.ID = pc.post_id LEFT JOIN wp_categories c ON pc.category_id = c.cat_ID WHERE post_status = 'publish' GROUP BY cat_ID
Warning: Cannot modify header information - headers already sent by (output started at /homepages/42/d169267346/htdocs/wp-includes/wp-db.php:160) in /homepages/42/d169267346/htdocs/wp-includes/pluggable.php on line 391