This is because you have disabled phpinfo in your php.ini file. Just remove that entry from disable_functions and this should be fixed.
grep phpinfo /usr/local/lib/php.ini
disable_functions = show_source, system, shell_exec, passthru, exec, phpinfo, popen, proc_open, allow_url_fopen, ini_set
[wpfmb type=’info’ theme=2]if you want to view your php settings you can do it by using a phpinfo page.[/wpfmb]