[Bitrix\Main\DB\SqlQueryException]
Mysql query error: (2006) MySQL server has gone away (400)
SELECT * FROM b_lang_domain ORDER BY LENGTH(DOMAIN)
/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/web/cookie.php:218
#2: Bitrix\Main\Web\Cookie::getCookieDomain()
/home/bitrix/www/bitrix/modules/main/include.php:280
#3: require_once(string)
/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#4: require_once(string)
/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#5: require_once(string)
/home/bitrix/www/bitrix/header.php:1
#6: require(string)
/home/bitrix/www/ws_catalog/index.php:2
#7: include_once(string)
/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#8: include_once(string)
/home/bitrix/www/bitrix/urlrewrite.php:2
Fatal error: Uncaught Bitrix\Main\DB\SqlQueryException: Mysql query error: (2006) MySQL server has gone away in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
Stack trace:
#0 /home/bitrix/www/bitrix/modules/main/lib/db/connection.php(330): Bitrix\Main\DB\MysqliConnection->queryInternal('\n\t\t\t\tSELECT FRO...', Array, NULL)
#1 /home/bitrix/www/bitrix/modules/main/lib/eventmanager.php(230): Bitrix\Main\DB\Connection->query('\n\t\t\t\tSELECT FRO...')
#2 /home/bitrix/www/bitrix/modules/main/lib/eventmanager.php(333): Bitrix\Main\EventManager->loadEventHandlers()
#3 /home/bitrix/www/checkaccess/check.php(24): Bitrix\Main\EventManager->findEventHandlers('main', 'OnBeforeProlog')
#4 [internal function]: CheckAccess->{closure}()
#5 {main}
thrown in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php on line 137