MySQL Query Error: SELECT COUNT('x') as C FROM b_iblock B INNER JOIN b_lang L ON B.LID=L.LID INNER JOIN b_iblock_element BE ON BE.IBLOCK_ID = B.ID WHERE 1=1 AND ( ((((BE.IBLOCK_ID = '26')))) AND ((((BE.CODE LIKE 'christmas-shine')))) AND ((((BE.ACTIVE='Y')))) ) AND (((BE.WF_STATUS_ID=1 AND BE.WF_PARENT_ELEMENT_ID IS NULL))) [[2006] MySQL server has gone away]

DB query error.
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Fatal error: Uncaught Bitrix\Main\DB\SqlQueryException: Mysql query error: (2006) MySQL server has gone away in /home/bitrix/ext_www/ Stack trace: #0 /home/bitrix/ext_www/ Bitrix\Main\DB\MysqliConnection->queryInternal('SELECT * FROM `...') #1 /home/bitrix/ext_www/ Bitrix\Main\DB\MysqlCommonConnection->getTableFields('b_sec_session') #2 /home/bitrix/ext_www/ Bitrix\Main\DB\Connection->getTableField('b_sec_session', 'SESSION_ID') #3 /home/bitrix/ext_www/ Bitrix\Main\DB\SqlHelper->prepareAssignment('b_sec_session', 'SESSION_ID', 'sEXGJpvvmcjiOxB...') #4 /home/bitrix/ext_www/ Bitrix\Main\Entity\DataManager::delete(Array) #5 [internal f in /home/bitrix/ext_www/ on line 137