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                        <pre>[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`main_group`.`ID` AS `ID`
FROM `b_group` `main_group` 

WHERE `main_group`.`ANONYMOUS` = 'Y'
AND `main_group`.`ACTIVE` = 'Y'
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection-&gt;queryInternal(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection-&gt;query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:3398
#2: Bitrix\Main\ORM\Query\Query-&gt;query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:825
#3: Bitrix\Main\ORM\Query\Query-&gt;exec()
	/home/bitrix/www/bitrix/modules/main/lib/orm/data/datamanager.php:500
#4: Bitrix\Main\ORM\Data\DataManager::getList(array)
	/home/bitrix/www/bitrix/modules/main/lib/user.php:321
#5: Bitrix\Main\UserTable::getUserGroupIds(integer)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:2367
#6: CProductQueryBuilder::getUserGroups(integer)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:2176
#7: CProductQueryBuilder::getPriceTypeAccess(array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:2146
#8: CProductQueryBuilder::selectPriceTypeAllowedView(array, array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1507
#9: CProductQueryBuilder::getField(array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1868
#10: CProductQueryBuilder::buildSelect(array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1831
#11: CProductQueryBuilder::build(array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1768
#12: CProductQueryBuilder::prepareQuery(array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:52
#13: CProductQueryBuilder::makeFilter(array)
	/home/bitrix/www/bitrix/modules/iblock/classes/general/iblockelement.php:1289
#14: CAllIBlockElement-&gt;MkFilter(array, array, array)
	/home/bitrix/www/bitrix/modules/iblock/classes/general/iblockelement.php:3095
#15: CAllIBlockElement-&gt;PrepareGetList(array, array, array, string, array, array, NULL, NULL, array, boolean, string, array, array, array)
	/home/bitrix/www/bitrix/modules/iblock/classes/mysql/iblockelement.php:343
#16: CIBlockElement-&gt;prepareSql(array, array, boolean, array)
	/home/bitrix/www/bitrix/modules/iblock/classes/general/iblockelement.php:5371
#17: CAllIBlockElement::GetPropertyValues(integer, array, boolean, array)
	/home/bitrix/www/local/components/akona/catalog.smart.filter/component.php:174
#18: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#19: CBitrixComponent-&gt;__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:103
#20: CBitrixComponent-&gt;executeComponent()
	/home/bitrix/www/local/components/akona/catalog.smart.filter/class.php:138
#21: CBitrixCatalogSmartFilter-&gt;executeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:656
#22: CBitrixComponent-&gt;includeComponent(string, array, object, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1063
#23: CAllMain-&gt;IncludeComponent(string, string, array, object, array)
	/home/bitrix/www/local/components/akona/catalog/templates/kazcat/section.php:171
#24: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:789
#25: CBitrixComponentTemplate-&gt;__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:884
#26: CBitrixComponentTemplate-&gt;IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:764
#27: CBitrixComponent-&gt;showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:712
#28: CBitrixComponent-&gt;includeComponentTemplate(string)
	/home/bitrix/www/local/components/akona/catalog/component.php:212
#29: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#30: CBitrixComponent-&gt;__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:680
#31: CBitrixComponent-&gt;includeComponent(string, array, boolean, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1063
#32: CAllMain-&gt;IncludeComponent(string, string, array, boolean)
	/home/bitrix/www/catalog/index.php:196
#33: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#34: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2
</pre><br />
<b>Fatal error</b>:  Uncaught Bitrix\Main\DB\SqlQueryException: Mysql query error: (2006) MySQL server has gone away in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
Stack trace:
#0 /home/bitrix/www/bitrix/modules/main/lib/db/connection.php(330): Bitrix\Main\DB\MysqliConnection-&gt;queryInternal('SELECT \n\t`main_...', Array, NULL)
#1 /home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php(3398): Bitrix\Main\DB\Connection-&gt;query('SELECT \n\t`main_...')
#2 /home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php(825): Bitrix\Main\ORM\Query\Query-&gt;query('SELECT \n\t`main_...')
#3 /home/bitrix/www/bitrix/modules/main/lib/orm/data/datamanager.php(500): Bitrix\Main\ORM\Query\Query-&gt;exec()
#4 /home/bitrix/www/bitrix/modules/main/lib/analytics/sitespeed.php(95): Bitrix\Main\ORM\Data\DataManager::getList(Array)
#5 /home/bitrix/www/bitrix/modules/main/lib/analytics/counter.php(92): Bitrix\Main\Analytics\SiteSpeed::isIntranetSite('s1')
#6 /home/bitrix/www/bitrix/modules/main/classes/general/module.php(480): Bit in <b>/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php</b> on line <b>137</b><br />