Unable to start session. error message on a fresh install MATOMO 4.6.2

I have just installed MATOMO 4.6.2 but get the following error message halfway through the setup process

Zend_Session::start() - Warnings: /var/sites/****/public_html/*****/libs/Zend/Session.php(Line:496): Error #2 session_start(): Cannot find save handler ‘memcached’ - session startup failed

How do I get past this?