MySQL error in file: /engine/modules/functions.php at line 1015

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 FROM dle_post p LEFT JOIN dle_post_extras e ON (p.id=e.news_id) WHERE category regexp '[[:<:]](2000|2001|2002|2003|2004|2006|2007|2008|2009|2010|2011|2012|2013|2024|2025|2035|2039|2042|2043|2047|2048|2052|2055|2056|2057|2058|2059|2060|2061|2062|2063|2064|2065|2066|2067|2068|2071|2072|2073|2074|2075|2076|2077|2078|2079|2080|2081|2083|2084|2089|2091|2092|2094|2095|2098|2099|2100|2101|2102|2103|2104|2105|2106|2107|2108|2109|2110|2111|2113|2114|2115|2116|2117|2118|2119|2121|2122|2123|2124|2125|2126|2127|2128|2129|2130|2131|2132|2133|2134|2135|2136|2138|2139|2140|2141|2142|2143|2144|2145|2146|2147|2148|2149|2150|2151|2152|2153|2154|2155|2160|2161|2162|3000|3001|3011|3012|3013|3014|3015|3016|3017|3018|3019|3021)[[:>:]]' AND approve=1 AND date < '2019-07-16 03:15:00' ORDER BY rating DESC LIMIT 0,6