Run the app and find some blog posts that have this link. Check out the line under the title looks good and the link works
Also check it is not rendered on normal posts
Here are some for example that have a media link
/blog/how-blockchain-will-change-the-way-we-work-play-and-stay-healthy-in-the-future
/blog/gnc-shines-amid-high-profile-bitcoin-dev-resignations
/blog/is-there-a-future-for-cryptocurrencies-without-privacy-features
also run npm run test to run new tests