Ending Your Movement
You can’t end your movement in the same square as another creature unless it is helpless.

Accidentally Ending Movement in an Illegal Space
Sometimes a character ends its movement while moving through a space where it’s not allowed to stop. When that happens, put your miniature in the last legal position you occupied, or the closest legal position, if there’s a legal position that’s closer.

ncG1vNJzZmivp6x7prrWqKmlnF6kv6h706GpnpmUqHyjwculZKuto517coSPbG9rZw%3D%3D