Is it a mod compatibility issue?

Yes

Minecraft version

1.19.2

Describe the issue

I am getting an error that I can not use the latest version of Iris 1.6.4.
It will only allow me to use Iris 1.4.1.

I think it would be good to fix compat with Iris, both of these mods are quite popular and likely used together a lot

Would it be possible to port v3.2.6 or later to 1.19.2? Not having latest versions of some mods really does complicate things.

+1 same error, won't work with the latest version of iris on fabric minecraft 1.19.2