[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)

				SELECT
					P.ID
					,P.CODE
					,P.TEMPLATE
					,P.ENTITY_TYPE
					,P.ENTITY_ID
					,IP.VALUE
					,IP.SECTION_ID
				FROM
					b_iblock_section_iprop IP
					INNER JOIN b_iblock_iproperty P ON P.ID = IP.IPROP_ID
				WHERE
					IP.IBLOCK_ID = 4
					AND IP.SECTION_ID in (151)
				
/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/iblock/lib/inheritedproperty/sectionvalues.php:116
#2: Bitrix\Iblock\InheritedProperty\SectionValues->queryValues()
	/home/bitrix/www/bitrix/modules/iblock/lib/inheritedproperty/basevalues.php:104
#3: Bitrix\Iblock\InheritedProperty\BaseValues->getValues()
	/home/bitrix/www/bitrix/components/bitrix/catalog.section.list/component.php:163
#4: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#5: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:664
#6: CBitrixComponent->includeComponent(string, array, object)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#7: CAllMain->IncludeComponent(string, string, array, object, array)
	/home/bitrix/www/local/templates/expert24_default/components/tesslab/catalog/main/section_vertical.php:142
#8: include(string)
	/home/bitrix/www/local/templates/expert24_default/components/tesslab/catalog/main/section.php:78
#9: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:789
#10: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:884
#11: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:746
#12: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:694
#13: CBitrixComponent->includeComponentTemplate(string)
	/home/bitrix/www/local/components/tesslab/catalog/component.php:197
#14: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#15: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:664
#16: CBitrixComponent->includeComponent(string, array, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#17: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/bitrix/www/ua/catalog/index.php:530
#18: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#19: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2