[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/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/eventmanager.php:168
#3: Bitrix\Main\EventManager->registerEventHandlerInternal(string, string, string, string, string, integer, string, string, integer)
	/home/bitrix/www/bitrix/modules/main/lib/eventmanager.php:157
#4: Bitrix\Main\EventManager->registerEventHandlerCompatible(string, string, string, string, string, integer, string, array)
	/home/bitrix/www/bitrix/modules/main/classes/general/module.php:507
#5: RegisterModuleDependences(string, string, string, string, string, integer)
	/home/bitrix/www/bitrix/modules/cleantalk.antispam/include.php:25
#6: include_once(string)
	/home/bitrix/www/bitrix/modules/main/lib/loader.php:140
#7: Bitrix\Main\Loader::includeModuleInternal(string)
	/home/bitrix/www/bitrix/modules/main/lib/loader.php:107
#8: Bitrix\Main\Loader::includeModule(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/module.php:261
#9: CModule::IncludeModule(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/module.php:444
#10: ExecuteModuleEventEx(array)
	/home/bitrix/www/bitrix/modules/main/include.php:284
#11: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#12: require(string)
	/home/bitrix/www/shop/index.php:2
#13: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#14: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2