[Koha] koha 3 on Ubuntu error

hi i installed Doha 3 on Ubuntu 8 and when i try to access 127.0.1.1:8080 i get this error : Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html Content-type: text/html any help thanx