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

				SELECT TAG
				FROM b_cache_tag
				WHERE SITE_ID = 's1'
				AND CACHE_SALT = '/f62'
				AND RELATIVE_PATH = '/s1/bitrix/menu/06f'
			
/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/lib/db/mysqliconnection.php:138
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/lib/db/connection.php:332
#1: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/lib/data/taggedcache.php:52
#2: Bitrix\Main\Data\TaggedCache->initDbCache(string)
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/lib/data/taggedcache.php:98
#3: Bitrix\Main\Data\TaggedCache->endTagCache()
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/classes/general/cache.php:461
#4: CCacheManager->EndTagCache()
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/classes/general/component.php:989
#5: CBitrixComponent->endResultCache()
	/home/bitrix/ext_www/sibran.ru/bitrix/components/bitrix/menu/component.php:108
#6: include(string)
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/classes/general/component.php:535
#7: CBitrixComponent->__includeComponent()
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/classes/general/component.php:94
#8: CBitrixComponent->executeComponent()
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/classes/general/component.php:569
#9: CBitrixComponent->includeComponent(string, array, boolean)
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/classes/general/main.php:1037
#10: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/bitrix/ext_www/sibran.ru/bitrix/templates/promsoft/header.php:114
#11: include_once(string)
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/include/prolog_after.php:90
#12: include(string)
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/classes/general/main.php:295
#13: CAllMain->AuthForm(boolean)
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/include.php:578
#14: require_once(string)
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/include/prolog_before.php:14
#15: require_once(string)
	/home/bitrix/ext_www/sibran.ru/bitrix/modules/main/include/prolog.php:10
#16: require_once(string)
	/home/bitrix/ext_www/sibran.ru/bitrix/header.php:1
#17: require(string)
	/home/bitrix/ext_www/sibran.ru/login/index.php:3