Thank you for your offer of help.?? I have created 3 staging sites with different staging environments to aid with your investigations:
https://www.vv.photography/before update/?
This site is before the sunshine plugin update is applied and a selection of other plugins and a theme are waiting to be updated.? The cart icon is present.?
https://www.vv.photography/aftersunshineupdate/
This staging site is with the latest sunshine plugin updated but other plugins and a theme are still requiring an update.? The cart icon is missing.
https://www.vv.photography/afterallpluginsupdate/
This site has all plugins and theme up to date.? The cart icon is missing.?In addition to this there is a separate subdomain ?www.fr.vv.photography, this did the same thing when I tried the update so I have left it to apply the same solution as the main domain.?I hope that this helps? ?Kind regards Karen