Doubt

Hello, I am new to Cpanel, I'm 14 years old and I'm Brazilian. I bought a VPS for me to learn Mecher in the system, a simple 4GB. I saw some tutorials and installed Cpanel everything right by ssh. I went into the WHM, set everything up, I created the packages, configured antivirus, cPHulk, BruteForce protection, etc. .. However, when I go to create a new User, it's a warning. Print: http://prntscr.com/4ldkgo This is the message that appears therein: Executed /usr/bin/openssl rsa -in /dev/stdin -pubout -outform PEM at /usr/local/cpanel/Cpanel/DKIM.pm line 209. Cpanel::Carp::__ANON__(__CPANEL_HIDDEN__) called at /usr/local/cpanel/Cpanel/DKIM.pm line 209 Cpanel::DKIM::check_and_gen_keys(__CPANEL_HIDDEN__) called at /usr/local/cpanel/Cpanel/DKIM.pm line 123 Cpanel::DKIM::setup_domain_keys(__CPANEL_HIDDEN__, __CPANEL_HIDDEN__, __CPANEL_HIDDEN__, 1) called at /usr/local/cpanel/Whostmgr/Accounts/Create.pm line 1465 Whostmgr::Accounts::Create::_wwwacct(__CPANEL_HIDDEN__, __CPANEL_HIDDEN__, __CPANEL_HIDDEN__, __CPANEL_HIDDEN__, __CPANEL_HIDDEN__, __CPANEL_HIDDEN__, __CPANEL_HIDDEN__, __CPANEL_HIDDEN__, ...) called at /usr/local/cpanel/Whostmgr/Accounts/Create.pm line 1978 Whostmgr::Accounts::Create::__createaccount('dbuser', 'ultrahitz', 'sign', '', 'hasuseregns', 1, 'dkim', 1, ...) called at /usr/local/cpanel/Whostmgr/Accounts/Create.pm line 2029 Whostmgr::Accounts::Create::_createaccount('dbuser', 'ultrahitz', 'sign', '', 'hasuseregns', 1, 'dkim', 1, ...) called at whostmgr/bin/whostmgr5 line 629 main::wwwacct() called at whostmgr/bin/whostmgr5 line 249 What should I do to solve this? PS: I do not speak english very well. Regards, Eduardo Riss"o