Hello.Please provide a link to a page with comments.

there are now 10 issues with comments..

http://www.paulcee.co.uk/blog/?minelab-in-depth-fow

this is highlighted from GOOGLE Review snippets and this was highlighted in red..

<div style="margin-bottom: 5px;" itemprop="aggregateRating" itemscope itemtype="http://schema.org/AggregateRating">Average Vote: <span itemprop="worstRating" style="display: none;">1</span><span itemprop="ratingCount" style="display: none;">1</span><span itemprop="ratingValue">5.0</span>/<span itemprop="bestRating">5</span></div>

You are probably talking about reports in Google Search Console.

I sent a notification to the company employees. Expect an answer from them here in the comments.

yes it is a new feature in there and has pulled up the issues..

Hello Paul

First of all, keep in mind that these warnings there are appearing are not penalizing errors. They're simple warnings that highlight the fact that the code used to highlight the reviews could use more data to improve its functionality.

This matter has already been notified to the developers so that this can be kept under consideration to further improve the functionality of the tool.

I thank you for your feedback as we keep on working to improve this 

Stefano