The website went blank after updating the Appointments+

Today, after updating the Appointments+, the website went blank on Firefox!
On Opera it shows: "Parse error: syntax error, unexpected '<<' (T_SL), expecting function (T_FUNCTION) in /home/ilovedan/public_html/dev/wp-content/plugins/appointments/includes/addons/app-mp-product_cart_appointments.php on line 32"

I deactivated the plugin, and website came back online!
Please advice,
Thanks :slight_smile: