Current master version code is not compatible with gym v0.26 api, which requires:
# reset function should return additional info objects (a dict)
# and also takes two more args, i.e. seed and options
def reset(self, seed=None, options=None)
...
return observations, info
Current master version code is not compatible with gym v0.26 api, which requires:
Detail can be found at openai-gym doc: link