I rewrite the problem.
Any help or advise would be great as I’m stuck?
When I preview a link in the Card Validator, I get the following message,
*.yonhapnews.co.kr whitelist request for summary card was approved 2 years ago
But at the same time, the log throws a warning as Not whitelisted,
INFO: Page fetched successfully INFO: 29 metatags were found INFO: twitter:card = summary tag found WARN: Not whitelisted
I would be really grateful if someone could fix this issue. Thanks.