wrappers.vector.HumanRendering doesn't actually render

wrappers.vector.HumanRendering doesn't actually render: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). I'm trying to use gymnasium.wrappers.vector.HumanRendering to show several CartPole envs tiled in a single pygame window: