Google structured data review error

When using Google's Rich Results tool to test your Google snippets you may see an error for your review data similar to the one below.

As Google makes frequent changes to its structured data requirements, there is often a lag between this change and a review app's ability to update to these new requirements. If you are seeing an error in your review data here, you can reach out to your review app's support team as they would be able to address this issue.