[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SHOW TABLES LIKE 'b_iblock_1_index_val'
/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/lib/db/connection.php:329
#1: Bitrix\Main\DB\Connection->query(string)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/lib/db/mysqlcommonconnection.php:48
#2: Bitrix\Main\DB\MysqlCommonConnection->isTableExists(string)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/lib/propertyindex/dictionary.php:54
#3: Bitrix\Iblock\PropertyIndex\Dictionary->isExists()
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/lib/propertyindex/facet.php:57
#4: Bitrix\Iblock\PropertyIndex\Facet->__construct(integer)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/lib/propertyindex/querybuilder.php:28
#5: Bitrix\Iblock\PropertyIndex\QueryBuilder->__construct(integer)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/classes/general/iblockelement.php:653
#6: CAllIBlockElement->MkFilter(array, array, array)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/classes/general/iblockelement.php:3091
#7: CAllIBlockElement->PrepareGetList(array, array, array, string, array, array, NULL, NULL, array, boolean, string, array, array, array)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/classes/mysql/iblockelement.php:340
#8: CIBlockElement->prepareSql(array, array, boolean, array)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/classes/mysql/iblockelement.php:642
#9: CIBlockElement::GetList(array, array, boolean, boolean, array)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/classes/general/comp_findtools.php:25
#10: CIBlockFindTools::GetElementID(integer, string, integer, string, array)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/lib/component/element.php:280
#11: Bitrix\Iblock\Component\Element->checkElementId()
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/lib/component/element.php:242
#12: Bitrix\Iblock\Component\Element->processResultData()
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/lib/component/base.php:3955
#13: Bitrix\Iblock\Component\Base->loadData()
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/lib/component/base.php:3944
#14: Bitrix\Iblock\Component\Base->initialLoadAction()
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/lib/component/element.php:229
#15: Bitrix\Iblock\Component\Element->initialLoadAction()
	
#16: call_user_func(array)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/lib/component/base.php:4129
#17: Bitrix\Iblock\Component\Base->doAction()
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/iblock/lib/component/base.php:4147
#18: Bitrix\Iblock\Component\Base->executeComponent()
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/classes/general/component.php:585
#19: CBitrixComponent->includeComponent(string, array, object)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/classes/general/main.php:1035
#20: CAllMain->IncludeComponent(string, string, array, object)
	/var/www/bitrix/data/www/sheyko.de/bitrix/templates/monop/components/bitrix/catalog/monopoly/element.php:146
#21: include(string)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/classes/general/component_template.php:714
#22: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/classes/general/component_template.php:806
#23: CBitrixComponentTemplate->IncludeTemplate(array)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/classes/general/component.php:681
#24: CBitrixComponent->showComponentTemplate()
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/classes/general/component.php:629
#25: CBitrixComponent->includeComponentTemplate(string)
	/var/www/bitrix/data/www/sheyko.de/bitrix/components/bitrix/catalog/component.php:169
#26: include(string)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/classes/general/component.php:548
#27: CBitrixComponent->__includeComponent()
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/classes/general/component.php:600
#28: CBitrixComponent->includeComponent(string, array, boolean)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/classes/general/main.php:1035
#29: CAllMain->IncludeComponent(string, string, array, boolean)
	/var/www/bitrix/data/www/sheyko.de/catalog/index.php:356
#30: include_once(string)
	/var/www/bitrix/data/www/sheyko.de/bitrix/modules/main/include/urlrewrite.php:159
#31: include_once(string)
	/var/www/bitrix/data/www/sheyko.de/bitrix/urlrewrite.php:2