[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SHOW INDEXES FROM b_iblock_element_property
/home/web/smolotka.shop/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/home/web/smolotka.shop/www/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query(string)
	/home/web/smolotka.shop/www/local/modules/sepro.helper/lib/orm.php:114
#2: Sepro\ORMFactory::GetMap(string)
	/home/web/smolotka.shop/www/local/modules/sepro.helper/lib/orm.php:44
#3: Sepro\ORMFactory::compile(string)
	/home/web/smolotka.shop/www/local/php_interface/init.php:45
#4: include_once(string)
	/home/web/smolotka.shop/www/bitrix/modules/main/include.php:241
#5: require_once(string)
	/home/web/smolotka.shop/www/bitrix/modules/main/include/prolog_before.php:14
#6: require_once(string)
	/home/web/smolotka.shop/www/bitrix/modules/main/include/prolog.php:10
#7: require_once(string)
	/home/web/smolotka.shop/www/bitrix/header.php:1
#8: require(string)
	/home/web/smolotka.shop/www/index.php:5