[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost, 127.0.0.1]: No such file or directory (400)
/home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php:43
#0: Bitrix\Main\DB\MysqlConnection->connectInternal()
	/home/bitrix/www/bitrix/modules/main/lib/data/connection.php:53
#1: Bitrix\Main\Data\Connection->getResource()
	/home/bitrix/www/bitrix/modules/main/lib/db/mysqlsqlhelper.php:21
#2: Bitrix\Main\DB\MysqlSqlHelper->forSql(string)
	/home/bitrix/www/bitrix/modules/main/lib/eventmanager.php:167
#3: Bitrix\Main\EventManager->registerEventHandlerInternal(string, string, string, string, string, integer, string, array, integer)
	/home/bitrix/www/bitrix/modules/main/lib/eventmanager.php:156
#4: Bitrix\Main\EventManager->registerEventHandlerCompatible(string, string, string, string, string, integer, string, array)
	/home/bitrix/www/bitrix/modules/main/classes/general/module.php:489
#5: RegisterModuleDependences(string, string, string, string, string, integer, string)
	/home/bitrix/www/bitrix/php_interface/init.php:2090
#6: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include.php:226
#7: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#8: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:11
#9: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#10: require(string)
	/home/bitrix/www/production/item.php:2
#11: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:154
#12: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2