I have downloaded a model from Mixamo to use in a game for school. I'm using a plane to represent the ground. The Mixamo model has a character controller component on it, a mesh collider (no trigger), and a rigidbody (gravity on). The plane has a rigidbody (gravity off) and a mesh collider (no trigger). There is also a cube object in the scene with a rigidbody (gravity on) and a box collider (no trigger). When I press play the model and the cube both fall through the plane. How do I make it so they stop on top of the plane rather than fall through? See the pictures for my setup of each object.