Install freepbx: problem

Hi guy
i just installed freepbx but i have this error:

Untaring…Done
Module cxpanel successfully downloaded
Failed to install due to the following missing required module(s):

manager

The following error(s) occured:

  • Failed to run installation scripts

If i go on my control panel is see menu on top is not good, is like without css

Can i update it?
Thank you