schema.org google-search-console microdata amp-html google-rich-snippets

Missing required structured data element

In the Google search console it shows me under AMP:

Missing required structured data element for this site.

But I can't find any missing element. Any idea?

Solution

After an update in the Search Console, the error is away.
This don't resolve my problem why this site has this error but it is not longer shown. Thanks to all.

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