Follow steps :- I booked 4 items , proceed to Shopping cart , on this page I deleted all the booked item Issue Observed :

• It didn't update the cart as I removed all the booked items in real time .
• After that on clicking Proceed to Pay button display error on next screen.

https://chat.oneit.com.au/oneit-vqode/pl/iebgr3cba3b85daru1yaojyxba