MySQL error in file: /engine/modules/show.full.php at line 856

Error Number: 2006

The Error returned was:
MySQL server has gone away

SQL query:

SELECT id, date, short_story, xfields, title, category, alt_name FROM ru_post WHERE id IN(51941,52002,51858,51944,51947,51939,51937,51935,51954) ORDER BY id DESC