Converting website to an account issue

Hi, I just tried to convert a domain in account, and since this moment my website is shutdown. The first error was: Missing DEFMOD Config Line in /etc/wwwacct.conf, please reconfigure with Edit Setup. at /usr/local/cpanel/Whostmgr/Accounts/Create.pm line 534. after this my website shutdown I tired to had again in my first account but the domain doesn't appear, he say to me is already exist thank you so much