[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (1040) Too many connections (400)
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:64
#0: Bitrix\Main\DB\MysqliConnection->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/mysqlisqlhelper.php:21
#2: Bitrix\Main\DB\MysqliSqlHelper->forSql(string)
	/home/bitrix/www/bitrix/modules/main/lib/config/option.php:193
#3: Bitrix\Main\Config\Option::load(string)
	/home/bitrix/www/bitrix/modules/main/lib/config/option.php:38
#4: Bitrix\Main\Config\Option::get(string, string, boolean, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/option.php:30
#5: CAllOption::GetOptionString(string, string, boolean)
	/home/bitrix/www/bitrix/modules/main/jscore.php:86
#6: require_once(string)
	/home/bitrix/www/bitrix/modules/main/tools.php:5101
#7: CJSCore::_RegisterStandardExt()
	/home/bitrix/www/bitrix/modules/main/tools.php:4590
#8: CJSCore::Init(array)
	/home/bitrix/www/bitrix/modules/main/lib/composite/engine.php:1197
#9: Bitrix\Main\Composite\Engine::shouldBeEnabled()
	/home/bitrix/www/bitrix/modules/main/include.php:567
#10: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#11: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:77
#12: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#13: require(string)
	/home/bitrix/www/ua/catalog/index.php:3
#14: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#15: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2