What does "Unsupported host app detected" error mean?

Hi guys, what this message means? And how to solve it. Thanks in advance

Hi @organic_ocelot!

It means your host app (the one containing the /plasmic-host page) is not using the latest version of our packages.

For example, it might be the @plasmicapp/loader-nextjs package if you’re using the headless API for NextJs.

This warning is displayed when the old version might miss some more recent features and prevent those features from working correctly in Studio. You can fix it by installing the latest versions of those packages

Thank you, Victor!

You can fix it by installing the latest versions of those packages

Ok, but how? I know most people around here know what that means, but I don’t.