Hello,
Thank you for contacting us and we regret the inconvenience caused.
You can set a featured image to fix the issue.
If the Homepage is not a static one, then you can also set a default OpenGraph thumbnail and that would also fix this issue.
You can set the default OpenGraph thumbnail from your WordPress admin area > Rank Math > Titles & Meta > Global Meta > OpenGraph Thumbnail. https://i.rankmath.com/S7FPSh
Once added the OpenGraph thumbnail/featured image, clear your website’s cache and then test the website again on https://search.google.com/test/rich-results
Also, the tool you are using to test the page is not being updated anymore and it’s deprecated by Google, meaning that the results coming from there can’t be assumed to be correct.
You should always use this tool to test Rich Results: https://search.google.com/test/rich-results
Hope that helps.
Thank you.
Hello,
We’re glad that we could address your concern.
If you have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.
Thank you.