Thanks Mike
Switching the theme fixes the issue. Will try and find the problem in the theme.
Thanks so much for your help.
I did a
system status > tools > Clear all sessions
but when I refresh the cart, the product i added is still there and the problem still occurs
Hi Mike
No there isn’t any custom code in the footer.
I had installed this plugin which might have been causing the problem?
http://reigelgallarde.me/product/woocommerce-woorei-shop-manager/
but the plugin is now disabled – yet the error persists