[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (1040) Too many connections (400)
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:65
#0: Bitrix\Main\DB\MysqliConnection->connectInternal
	/home/bitrix/www/bitrix/modules/main/lib/db/mysqlcommonconnection.php:134
#1: Bitrix\Main\DB\MysqlCommonConnection->getTableFields
	/home/bitrix/www/bitrix/modules/main/lib/db/sqlhelper.php:304
#2: Bitrix\Main\DB\SqlHelper->prepareInsert
	/home/bitrix/www/bitrix/modules/main/lib/db/mysqlcommonsqlhelper.php:482
#3: Bitrix\Main\DB\MysqlCommonSqlHelper->prepareMerge
	/home/bitrix/www/bitrix/modules/main/lib/config/option.php:267
#4: Bitrix\Main\Config\Option::set
	/home/bitrix/www/bitrix/modules/main/classes/general/option.php:42
#5: CAllOption::SetOptionString
	/home/bitrix/www/bitrix/php_interface/include/init/defines.php:2
#6: include(string)
	/home/bitrix/www/bitrix/php_interface/init.php:3
#7: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include.php:241
#8: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#9: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#10: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#11: require(string)
	/home/bitrix/www/catalog/index.php:2
#12: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#13: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2