Hi,
Now I know that 22c of virtuemart just came out but I tried the upgrade on my localhost and the cart will show as before but when hitting confirm The website encountered an error while retrieving http://localhost/index.php?option=com_v ... k=checkout. It may be down for maintenance or configured incorrectly.
Reload this webpage.
Press the reload button to resubmit the data needed to load the page.
Error code: 500
I Unpublished one page checkout and just use native checkout and all is working on 22c