gym.error.DeprecatedEnv: Env Pendulum-v1 not found

[aik7]

I cannot compare with stable-baseline3 since Pendulum-v1 is not available in EXARL.
Note:
EXARL supports Pendulum-v0, but not Pendulum-v1.
stable-baseline3 supports Pendulum-v1, but not Pendulum-v0.

Traceback (most recent call last):
  File "/home/kagawa/anaconda3/envs/exarl/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kagawa/anaconda3/envs/exarl/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "exarl/driver/__main__.py", line 29, in <module>
    exa_learner = exarl.ExaLearner()
  File "/home/kagawa/Projects/EXARL/exarl/base/learner_base.py", line 46, in __init__
    self.agent, self.env, self.workflow = self.make(agent_id, env_id, workflow_id)
  File "/home/kagawa/Projects/EXARL/exarl/base/learner_base.py", line 89, in make
    env = gym.make(env_id).unwrapped
  File "/home/kagawa/anaconda3/envs/exarl/lib/python3.7/site-packages/gym/envs/registration.py", line 156, in make
    return registry.make(id, **kwargs)
  File "/home/kagawa/anaconda3/envs/exarl/lib/python3.7/site-packages/gym/envs/registration.py", line 100, in make
    spec = self.spec(path)
  File "/home/kagawa/anaconda3/envs/exarl/lib/python3.7/site-packages/gym/envs/registration.py", line 140, in spec
    raise error.DeprecatedEnv('Env {} not found (valid versions include {})'.format(id, matching_envs))
gym.error.DeprecatedEnv: Env Pendulum-v1 not found (valid versions include ['Pendulum-v0'])