Thanks for reaching out. From inspecting your site at present there are no validation errors, so the Search Console messages may be outdated. Can you use the URL inspection tool on that same URL and check if any errors exist?
I noticed also you’re using AMP in reader mode with the legacy reader theme. As it looks like you’re using the GeneratePress theme have you tried their AMP compatibility extension, making transitional or even standard mode a more achievable option? That way your AMP URLs will use the same theme templates.
@soumyainfo2health As we haven’t received a response, I’ll mark this as resolved. Feel free to open a new support topic if you continue to encounter issues, or reopen this topic and we’d be happy to assist. Thank you!