Twitter Cards cannot be used without applying for them.

・Card Validator | Twitter Developers

Unlike Facebook where OGP settings are reflected immediately, it seems to be different, so make sure to apply in advance.

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Reference Information

・Twitterカード | Twitter Developers

・Twitter Cards利用申請 - Qiita

・Twitter Cardsの申請をしてみたよというお話。 | okaoka.net

That’s all from the Gemba.