Mod_security and open_basedir needs to be disabled for a specific domain but they are enabled in the server configuration.
To disable mod_security , just get into the .htaccess file for the domain and put the following code in it :
To disable open_basedir , add the following line to the VirtualHost entry for the domain :
php_admin_value open_basedir none
If it is a cPanel server then you can do it through WHM>>Main>>Security>>Security center>>PHP open_basedir Tweak