[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SHOW TABLES LIKE 'b_iblock_18_index_val'
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/db/mysqlcommonconnection.php:37
#2: Bitrix\Main\DB\MysqlCommonConnection->isTableExists(string)
	/home/bitrix/www/bitrix/modules/iblock/lib/propertyindex/dictionary.php:54
#3: Bitrix\Iblock\PropertyIndex\Dictionary->isExists()
	/home/bitrix/www/bitrix/modules/iblock/lib/propertyindex/facet.php:57
#4: Bitrix\Iblock\PropertyIndex\Facet->__construct(string)
	/home/bitrix/www/bitrix/modules/iblock/lib/propertyindex/querybuilder.php:28
#5: Bitrix\Iblock\PropertyIndex\QueryBuilder->__construct(string)
	/home/bitrix/www/bitrix/modules/iblock/classes/general/iblockelement.php:662
#6: CAllIBlockElement->MkFilter(array, array, array)
	/home/bitrix/www/bitrix/modules/iblock/classes/general/iblockelement.php:3095
#7: CAllIBlockElement->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
#8: CIBlockElement->prepareSql(array, array, boolean, array)
	/home/bitrix/www/bitrix/modules/iblock/classes/mysql/iblockelement.php:666
#9: CIBlockElement::GetList(array, array, boolean, array, array)
	/home/bitrix/www/bitrix/components/bitrix/news.list/component.php:304
#10: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#11: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:680
#12: CBitrixComponent->includeComponent(string, array, boolean, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1063
#13: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/bitrix/www/include/left_block/comp_news_articles.php:67
#14: include(string)
	/home/bitrix/www/bitrix/components/bitrix/main.include/templates/.default/template.php:17
#15: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:789
#16: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:884
#17: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:764
#18: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:712
#19: CBitrixComponent->includeComponentTemplate()
	/home/bitrix/www/bitrix/components/bitrix/main.include/component.php:280
#20: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#21: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:680
#22: CBitrixComponent->includeComponent(string, array, boolean, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1063
#23: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/bitrix/www/local/templates/aspro_next/page_blocks/left_block_1.php:58
#24: include_once(string)
	/home/bitrix/www/bitrix/modules/aspro.next/classes/general/CNext.php:122
#25: CNext::ShowPageType(string)
	/home/bitrix/www/local/templates/aspro_next/footer.php:35
#26: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/epilog_before.php:93
#27: require(string)
	/home/bitrix/www/bitrix/modules/main/include/epilog.php:2
#28: require_once(string)
	/home/bitrix/www/bitrix/footer.php:4
#29: require(string)
	/home/bitrix/www/catalog/index.php:1569
#30: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#31: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2

Fatal error: 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->queryInternal('SELECT \n\t`main_...', Array, NULL) #1 /home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php(3538): Bitrix\Main\DB\Connection->query('SELECT \n\t`main_...') #2 /home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php(949): Bitrix\Main\ORM\Query\Query->query('SELECT \n\t`main_...') #3 /home/bitrix/www/bitrix/modules/main/lib/orm/data/datamanager.php(500): Bitrix\Main\ORM\Query\Query->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 /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php on line 137