I am putting the store together for my client and stumbled across this error.
'Parameter Missing or Invalid: Required parameter missing or invalid: items'.
Now the interesting bit - it only happens to certain products from the store, in other words, works well with some products and gives an error with the others. Most of the time error happens with products that are out of stock.
I haven't touched the code at all, also checked if it has been in any way modified by trying to roll back to the previous version, but it seems there have been no changes to the code as no previous version is available.
Just wondering if anyone could suggest what could be resulting in such weird behaviour?