Near to the end of the course with a little problem: The navmesh is not working anymore since we implemented the UI in lesson "Animating Turret Buttons". In the end of the lesson you test the UI, and your navmesh isnt working either. The ground enemys arn't moving (at the end of the Lesson at 11:55). All i found out is if i turn off the visibility checkbox for the HUD-Group in the inspector pannel, then the navmesh is working and the enemys are moving. If visibility for HUD is on, the enemy is not moving, if it is turned off, the enemy is moving. In the later Lesson "Spawning Emeny Waves" your game is working properly. I think you fixed this issue off screen. I've just finished the lesson Spawning Emeny Waves but i could'nt fix this till now. I'm not sure if it's a problem of the UI (Canvas) or the navmesh. Any advice to solve this?