cannot get into home, stories, etc. due to error msg

[reddancer]

When I put www.solotouch.com, it brings up the site, but when I click on Home, Stories, Techniques, I get this error message. Fatal error: Uncaught Error: Call to undefined function ST_getCacheName() in /home/httpd/html/solotouch.com/public_html/controllers/control.index.php:24 Stack trace: #0 /home/httpd/html/solotouch.com/public_html/index.php(28): include() #1 {main} thrown in /home/httpd/html/solotouch.com/public_html/controllers/control.index.php on line 24

This is December 3 at almost 2 in thr morning EST

[jeep]

Ditto, 1015 MST