Database error: connection

Message: SQLSTATE[HY000] [2002] Connection refused File: /home/lumir/domains/lumir.com.ua/public_html/vendor/lib/Inspinia/DB.php (Line 14) #0 /home/lumir/domains/lumir.com.ua/public_html/vendor/lib/Inspinia/DB.php(14): PDO->__construct('mysql:host=127....', 'lumir_comua', 'JTDGWLpm', Array) #1 /home/lumir/domains/lumir.com.ua/public_html/vendor/lib/Inspinia/Api.php(124): Inspinia\DB->setConnection(Array) #2 /home/lumir/domains/lumir.com.ua/public_html/vendor/lib/Inspinia/Api.php(13): Inspinia\Api::db() #3 /home/lumir/domains/lumir.com.ua/public_html/app/bootstrap.php(13): Inspinia\Api::currentSite() #4 /home/lumir/domains/lumir.com.ua/public_html/index.php(29): require_once('/home/lumir/dom...') #5 {main}