[users] Fatal error: Call to undefined function: session_name() in /usr/local/www/data/vegadns/src/session_start.php on line 28

[Jeremy Gray]

I just reinstalled VegaDNS from scratch on a new server and I'm getting
this error....
Fatal error: Call to undefined function: session_name() in 
/usr/local/www/data/vegadns/src/session_start.php on line 28

Any idea what that's about?