[otrs] loading home administration

Hi list I have i see the page the administration,but when it finishes down of the tables i see the following messages Forbidden You don't have permission to access /otrs/ on this server. Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request. Apache/2.0.40 Server at 192.168.10.20 Port 80 i hope can to help me Thanks you