I just received a mail by google about my blog and I am not sure what to do now in order to solve the problem. Do you have any idea how to solve that or what could be rechecked?
Thank you so much!
Here is the mail:
The following alerts were detected on your website:
The certificate chain referenced in "cert-url" is invalid for this signed exchange instance
We recommend that you resolve these issues as soon as possible to get the best experience and coverage in Google Search.
This seems to be a Google Search Console error and a result of an AMP (Accelerated Mobile Pages) report. This report helps you fix errors that prevent your AMP pages from appearing in Google Search results with AMP-specific features. You can read more about this specific error here. Addressing this error is optional, as the pages with this error will still display properly inside an AMP viewer.
If you, however, wish for this page to be presented with its signed URL, we would need additional information to be able to investigate this further: