The `info` returned by `step()` must be a python dictionary, actual type: <class 'str'>

[GeorgeFrangulea]

Hello,

Did anyone encounter the below error? I have re-did my anaconda env and I do not know what I changed but my code does not compile anymore. Keeps coming with these warning that suggests the ns3 env needs upgraded but this was not the case few days ago.
I would be very grateful if anyone could let me know the right python version to use, TensorFlow, gym etc.
Thanks.
BR,
George

Channel: 1 CCA: 1 RxPower: -56.6436
Channel: 2 CCA: 0 RxPower: -76.9897
Channel: 3 CCA: 0 RxPower: -76.9897
MyGetObservation: [0, 1, 0, 0]
MyGetReward: -1
MyGetGameOver: 0
MyGetExtraInfo: info
/home/dawn_redwood/anaconda3/envs/ns-3.39.1/lib/python3.9/site-packages/gym/utils/passive_env_checker.py:219: DeprecationWarning: WARN: Core environment is written in old step API which returns one bool instead of two. It is recommended to rewrite the environment with new step API.
logger.deprecation(
/home/dawn_redwood/anaconda3/envs/ns-3.39.1/lib/python3.9/site-packages/gym/utils/passive_env_checker.py:141: UserWarning: WARN: The obs returned by the step() method was expecting numpy array dtype to be uint64, actual type: int64
logger.warn(
/home/dawn_redwood/anaconda3/envs/ns-3.39.1/lib/python3.9/site-packages/gym/utils/passive_env_checker.py:165: UserWarning: WARN: The obs returned by the step() method is not within the observation space.
logger.warn(f"{pre} is not within the observation space.")
Traceback (most recent call last):
File "/home/dawn_redwood/ns-3-dev/contrib/opengym/examples/interference-pattern/./cognitive-agent-v1.py", line 209, in
next_state, reward, done, _ = env.step(action)
File "/home/dawn_redwood/anaconda3/envs/ns-3.39.1/lib/python3.9/site-packages/gym/wrappers/order_enforcing.py", line 37, in step
return self.env.step(action)
File "/home/dawn_redwood/anaconda3/envs/ns-3.39.1/lib/python3.9/site-packages/gym/wrappers/env_checker.py", line 37, in step
return env_step_passive_checker(self.env, action)
File "/home/dawn_redwood/anaconda3/envs/ns-3.39.1/lib/python3.9/site-packages/gym/utils/passive_env_checker.py", line 261, in env_step_passive_checker
assert isinstance(
AssertionError: The info returned by step() must be a python dictionary, actual type: <class 'str'>

[Linsooon]

I encountered this error too. This errors is because of the new OpenAI Gym framework which is mentioned in Example section of README
Hope this help :)