CONNECTION ERROR: SQLSTATE[HY000] [1045] Access denied for user 'registo_dev'@'localhost' (using password: YES)

file: /home/registo/domains/new.registo.pl/public_html/Nvmd/System/Db/DB.php
line: 22

#0 /home/registo/domains/new.registo.pl/public_html/Nvmd/System/Nvmd.php(38): Nvmd\System\Db\DB->__construct()
#1 /home/registo/domains/new.registo.pl/public_html/Nvmd/System/Nvmd.php(23): Nvmd\System\Nvmd->initDB()
#2 /home/registo/domains/new.registo.pl/public_html/index.php(6): Nvmd\System\Nvmd->run()
#3 {main}