Error with postcss and @astrojs/tailwind after updating to [email protected]

[open palm]

Hello, I've recently updated to astro 3.0 and with running astro run dev, I'm getting an error that reads:
Cannot read properties of undefined (reading 'postcss')

Full log included as image.

I've tried:

1. Adding tailwindcss as a plugin in postcss.config.cjs
2. Installing newest versions of tailwindcss through astro add, and manually
3. Installing old and newest versions of postcss,
   to no avail

Any help would be much appreciated!

[iron estuary]

Have you updated all the extensions, too?

[open palm]

I'm not sure which, could you tell me which ones i should try?

[iron estuary]

I'd do all, but do check that the tailwind integration is version 5 or up.

Check especially the @astrojs/ ones.

[open palm]

Hmmm ill try that in a couple of hours when i get back, thank you

That could be it