BipedalWalker-v3 and LunarLanderContinuous-v2 can not register

[PinChouKu]

Since the logic and file name have been changed, I cannot apply the command envs.make(). It returns wrong with
AttributeError: module 'gym.envs.box2d' has no attribute 'BipedalWalkerHardcore'

[GHysmu]

I met the same error o(╥﹏╥)o

[christopherhesse]

I was unable to reproduce this issue with gym==0.17.1, do you have a script and gym version number that cause it to happen?

[arnomoonens]

I think this is similar to #1423
For me, installing box2d-py (using pip) solved it.

[QasimWani]

use import Box2D for the box controls.
or just do pip install -e for the whole gym environment.

[jkterry1]

Closing due to inactivity