Site crashed after update to 5.2.14

Updated to 5.2.14
Cant access site or admin area

Catchable fatal error: Argument 1 passed to WHMCS_TokenManager::init() must be an instance of WHMCS_Init, instance of WHMCSCore given, called in /home/scotserv/public_html/includes/functions.php on line 0 and defined in /home/scotserv/public_html/includes/classes/class.TokenManager.php on line 0

Have submitted support ticket but asking here in case anyone has a clue

I have to admit I am finding these updates and subsequent sorts a tad tedious