I am trying to validate my twitter card meta tags, but it always shows as “Unable to render Card preview”
I followed this github guide for video cards. It always shows “No metatags found”
URL: https://app.socialaider.com/video/5a6346ead97f5851c1febef4/
Ok, I resolved this issue. In my case, the response headers of the page was not having a valid HTML content type.