Mrtg configure on ubuntu 12.04

mrtg configuration in ubuntu 12.04 i have completed with all settings but after running the web page it shows error pag cannot display i have tried with all the articles but no use send me the clear information about the configuration right from the beginning help me

thanks
maripeddi supraj

Could you please share the proper error message that Apache displaying? so that I can help you out. Also how you installed MRTG? During installation, have you faced any errors?