Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
Can you please give us a link of the posts where you get the errors? The link you added in the Sensitive Data Section is not valid.
Looking forward to helping you. Thank you.
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Hello,
Can you please run this through your hosting provider? The page is timing out while testing:

Looking forward to helping you. Thank you.
I`m hosting our website on Google Cloud. Looks like their services have been flaky since yesterday.
Just tried now, and it showed up on https://search.google.com/structured-data/testing-tool
Hello,
The error you see in Google structured data testing tool is not from the Schema added by Rank Math plugin. Some other plugin or theme active on your site is adding the schema which is throwing error. Please see the screencasts in the Sensitive Data Section.
Hope that helps. Thank you.
Thanks for your reply.
I do not have any plugins other than Rank Math to add schema markup.
Is there a way to identify if theme by default adds schema markup?
Hello,
You can troubleshoot the issue using Health Check plugin. You can follow the instructions given in this short tutorial: https://community.mythemeshop.com/tutorials/article/52-confirming-a-plugin-conflict/
Hope that helps. Thank you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.