NavMesh not working

[spark dome]

good ol' " Have you tried turning it off and on?"

Restart your game basically

if that dosent work, Then it is baking just that it's under the floor and u gotta use collisions or maybe u just have it set to don't show

[spark dome]

You just put the collisions on the floor a little above the visible floor and configure it to make sure "Generate Navmesh" is on

then bake it again