[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (2002) Connection refused (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/mysqliconnection.php:122
#1: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:329
#2: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/www/bitrix/modules/ingate.seo/lib/core.php:106
#3: Ingate\Seo\Core::getCurrentUrlFromTableByField(string, string)
	/home/bitrix/www/bitrix/modules/ingate.seo/lib/component/redirect.php:52
#4: Ingate\Seo\Redirect->__construct()
	/home/bitrix/www/bitrix/modules/ingate.seo/lib/component/redirect.php:30
#5: Ingate\Seo\Redirect::getInstance()
	/home/bitrix/www/bitrix/modules/ingate.seo/lib/event.php:104
#6: Ingate\Seo\Event::OnPageStart()
	
#7: call_user_func_array(array, array)
	/home/bitrix/www/bitrix/modules/main/classes/general/module.php:490
#8: ExecuteModuleEventEx(array)
	/home/bitrix/www/bitrix/modules/main/include.php:289
#9: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#10: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#11: require_once(string)
	/home/bitrix/www/bitrix/header.php:3
#12: require(string)
	/home/bitrix/www/materials/index.php:2