MySQL error in file: /engine/cache/system/plugins/1e9dd5621ee92174587d2f00854f3e19.php at line 2020

Error Number: 2006

The Error returned was:
MySQL server has gone away

SQL query:

SELECT p.id, p.autor, p.date, p.short_story, CHAR_LENGTH(p.full_story) as full_story, p.xfields, p.title, p.category, p.alt_name, p.comm_num, p.allow_comm, p.fixed, p.tags, e.news_read, e.allow_rate, e.rating, e.vote_num, e.votes, e.view_edit, e.editdate, e.editor, e.reason , u.email, u.name, u.user_id, u.news_num, u.comm_num as user_comm_num, u.user_group, u.lastdate, u.reg_date, u.banned, u.allow_mail, u.info, u.signature, u.foto, u.fullname, u.land, u.favorites, u.pm_all, u.pm_unread, u.time_limit, u.xfields as user_xfields FROM dle_post p INNER JOIN (SELECT DISTINCT(dle_post_extras_cats.news_id) FROM dle_post_extras_cats WHERE cat_id IN ('9','13','14','15','16','17','18','19','20','21','22','23','25','28','64','75')) c ON (p.id=c.news_id) LEFT JOIN dle_post_extras e ON (p.id=e.news_id) LEFT JOIN dle_users u ON (e.user_id=u.user_id) WHERE approve=1 ORDER BY date DESC LIMIT 0,5