MySQL error!

Lost connection to MySQL server during query(Errno=2013)

Your query:
SELECT postcat_cat_ID AS cat_ID, COUNT(*) AS cat_postcount FROM evo_postcats INNER JOIN evo_posts ON postcat_post_ID = ID WHERE ( post_status IN ('published') ) AND post_issue_date <= '2017-01-22 07:11:00' GROUP BY cat_ID