[Bitrix\Main\DB\SqlQueryException] Mysql query error: (2006) MySQL server has gone away (400) SHOW TABLES LIKE 'b_iblock_4_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:52 #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(integer) /home/bitrix/www/bitrix/components/bitrix/catalog.smart.filter/class.php:136 #5: CBitrixCatalogSmartFilter->executeComponent() /home/bitrix/www/bitrix/modules/main/classes/general/component.php:649 #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:82 #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