Hey Wayne
We’ve seen an uptick in similar reports. Our developers will investigate this further, but in many cases, there is no reason for alarm. The error message you see is from a legacy format. We now also use JSON-LD data, which still passes all the results along for Google’s rich snippets. Deprecating the now outdated method by us removing the code entirely is bad form. Ultimately, it seems to be a false alarm so far.
We’ll update you with our progress.
Thanks
Courtney 🙂