Look at the error messages.

"open_basedir restriction in effect. File(/home/rajakami/public_html) is not within the allowed path(s)"

You clearly have some server restrictions.

open_basedir is a setting in the PHP ini file. You either need to tell your host to change your PHP settings, or change them yourself if you are on a VPS.

It may also be that PHP is running in safe mode, again you'll need to contact your hosting provider and tell them to turn off safe mode (or use a new host).