I’m trying to integrate the GTM snippet into a Next.js 12 app as explained in this guide: https://morganfeeney.com/guides/nextjs/how-to-integrate-google-tag-manager-with-nextjs.

In my layout.js, I have the GoogleTagManager :

I have a stange issue with nextjs and their google tag manager.
it never render any code that I expect to see, like google advice to add for tagging.
how to fix it ?