MySQL Query Error: select BS.ID from b_iblock_section BS INNER JOIN b_iblock_section BS1 ON BS1.ID = BS.IBLOCK_SECTION_ID WHERE BS.IBLOCK_ID = 20 AND BS.CODE = 'cls_class' AND BS1.CODE = 'mercedes_benz' AND BS1.IBLOCK_SECTION_ID IS NULL [[2006] MySQL server has gone away]

DB query error. Please try later.

Fatal error: Uncaught Bitrix\Main\DB\SqlQueryException: Mysql query error: (2006) MySQL server has gone away in /home/bitrix/ext_www/xn--80apgbidj1a.xn--p1ai/bitrix/modules/main/lib/db/mysqliconnection.php:145 Stack trace: #0 /home/bitrix/ext_www/xn--80apgbidj1a.xn--p1ai/bitrix/modules/main/lib/db/connection.php(330): Bitrix\Main\DB\MysqliConnection->queryInternal() #1 /home/bitrix/ext_www/xn--80apgbidj1a.xn--p1ai/bitrix/modules/main/lib/orm/query/query.php(3304): Bitrix\Main\DB\Connection->query() #2 /home/bitrix/ext_www/xn--80apgbidj1a.xn--p1ai/bitrix/modules/main/lib/orm/query/query.php(816): Bitrix\Main\ORM\Query\Query->query() #3 /home/bitrix/ext_www/xn--80apgbidj1a.xn--p1ai/bitrix/modules/main/lib/orm/data/datamanager.php(500): Bitrix\Main\ORM\Query\Query->exec() #4 /home/bitrix/ext_www/xn--80apgbidj1a.xn--p1ai/bitrix/modules/main/lib/analytics/sitespeed.php(95): Bitrix\Main\ORM\Data\DataManager::getList() #5 /home/bitrix/ext_www/xn--80apgbidj1a.xn--p1ai/bitrix/modules/main/lib/analytics/counter.php(92): Bitrix\Main in /home/bitrix/ext_www/xn--80apgbidj1a.xn--p1ai/bitrix/modules/main/lib/db/mysqliconnection.php on line 145