Since Foudnry v11 has dropped, i just waited some time 'till some of the major modules where updated.
At the moment the nw foundry world is compatible with Foundry VTT v11 as long as you use at least combat utility belt and bar brawl.
If you are using Monk's Navigation module you just have to wait fome more time for it to update but otherwise you can just disable it.

As additional note is that some of the new rules or new NPCs and Monsters have also been updated to be in line with Core Rules v0.10.3 and the fixes of the Pre-made Adventures