I would like to apply acaric.jp/event/ for Twitter Cards.
This particular url is subdomain of acaric.jp, for which I have not set OGP yet, but I HAVE already set OGP for acaric.jp/event/
the thing is https://cards-dev.twitter.com/validator gives an error message,
"The URL you provided for acaric.jp to use the summary_large_image card did not validate. Please make sure the page contains valid metadata, then reapply for a Twitter card. "
Do you think I can apply the subdomain acaric.jp/event/ for Cards independently from acaric.jp domain?